XSLT: Remove double quotes from text fields

I need to remove double quotes from any text fields (but leave them around the fields when we output to the comma-delimited file.

Here is my XSLT:

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:csv="csv:csv"
xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl">
      
      <xsl:output method="text" encoding="iso-8859-1"/>

      <xsl:key name="kInvoiceDetailId" match="/Invoice/InvoiceLineItemDetail" use="concat(../VendorInvoiceNumber,'-',OriginatingInvoiceLineId)"/>

      
      <!-- DL being used (Comma in this case) -->
      <xsl:param name="DL" select="'&#44;'"/>
      <!-- Checking for carriage return -->
      <xsl:param name="CR" select="'&#xA;'"/>

      <xsl:strip-space elements="*"/>

      <!-- Column Headers -->
      <!--Create header row of element names
            (All fields are sent to JDE that are in the CIM, single line per invoice details)-->


      <xsl:variable name="headers" >
            <headers>ClientId</headers> <!-- 1 -->
            <headers>OriginatingInvoiceId</headers> <!-- 2 -->
            <headers>VendorId</headers> <!-- 3 -->
            <headers>AlternativeVendorId</headers> <!-- 4 -->
            <headers>VendorInvoiceNumber</headers> <!-- 5 -->
            <headers>InvoiceDate</headers> <!-- 6 -->
            <headers>InvoiceReceiveDate</headers> <!-- 7 -->
            <headers>GLDate</headers> <!-- 8 -->
            <headers>Remark</headers> <!-- 9 -->
            <headers>TotalInvoiceAmount</headers> <!-- 10 -->
            <headers>CurrencyCode</headers> <!-- 11 -->
            <headers>TaxRateAreaCode</headers> <!-- 12 -->
            <headers>StatusCodeCode</headers> <!-- 13 -->
            <headers>StatusCodeDescription</headers> <!-- 14 -->
            <headers>ClientApprovalNumber</headers> <!-- 15 -->
            <headers>AuthorizedBy</headers> <!-- 16 -->
            <headers>BatchReferenceNumber</headers> <!-- 17 -->
            <headers>InvoiceSource</headers> <!-- 18 -->
            <headers>NumberOfLines</headers> <!-- 19 -->
            <headers>OriginatingInvoiceLineId</headers> <!-- 20 -->
            <headers>POLineNumber</headers> <!-- 21 -->
            <headers>LineItemDescription</headers> <!-- 22 -->
            <headers>LocationId</headers> <!-- 23 -->
            <headers>BuildingName</headers> <!-- 24 -->
            <headers>LineItemAmount</headers> <!-- 25 -->
            <headers>TaxableLineItemAmount</headers> <!-- 26 -->
            <headers>TaxAmountLineItem</headers> <!-- 27 -->
            <headers>CompanyId</headers> <!-- 28 -->
            <headers>GLAccountCode</headers> <!-- 29 -->
            <headers>Subsidiary</headers> <!-- 30 -->
            <headers>SubLedger</headers> <!-- 31 -->
            <headers>SubLedgerType</headers> <!-- 32 -->
            <headers>LedgerType</headers> <!-- 33 -->
            <headers>CostCenter</headers> <!-- 34 -->
            <headers>AccountBlock</headers> <!-- 35 -->
            <headers>GLAccountDescription</headers> <!-- 36 -->
            <headers>ClientAccountCode</headers> <!-- 37 -->
            <headers>WBSCode</headers> <!-- 38 -->
            <headers>OriginatingProjectNumber</headers> <!-- 39 -->
            <headers>OriginatingProjectSystem</headers> <!-- 40 -->
            <headers>ClientPONumber</headers> <!-- 41 -->
            <headers>WorkOrderNumber</headers> <!-- 42 -->
            <headers>WorkOrderCompletedDate</headers> <!-- 43 -->
            <headers>WorkOrderCreatedDate</headers> <!-- 44 -->
            <headers>CodingBlock1</headers> <!-- 45 -->
            <headers>CodingBlock2</headers> <!-- 46 -->
            <headers>CodingBlock3</headers> <!-- 47 -->
            <headers>CodingBlock4</headers> <!-- 48 -->
            <headers>CodingBlock5</headers> <!-- 49 -->
            <headers>CodingBlock6</headers> <!-- 50 -->
            <headers>CodingDate1</headers> <!-- 51 -->
            <headers>CodingDate2</headers> <!-- 52 -->
      </xsl:variable>      

      <xsl:variable name="columns" >
            <columns>ClientId</columns> <!-- 1 -->
            <columns>OriginatingInvoiceId</columns> <!-- 2 -->
            <columns>VendorId</columns> <!-- 3 -->
            <columns>AlternativeVendorId</columns> <!-- 4 -->
            <columns>VendorInvoiceNumber</columns> <!-- 5 -->
            <columns>InvoiceDate</columns> <!-- 6 -->
            <columns>InvoiceReceiveDate</columns> <!-- 7 -->
            <columns>GLDate</columns> <!-- 8 -->
            <columns>Remark</columns> <!-- 9 -->
            <columns>TotalInvoiceAmount</columns> <!-- 10 -->
            <columns>CurrencyCode</columns> <!-- 11 -->
            <columns>TaxRateAreaCode</columns> <!-- 12-->
            <columns>common:Code</columns> <!-- 13 -->
            <columns>common:Description</columns> <!-- 14 -->
            <columns>ClientApprovalNumber</columns> <!-- 15 -->
            <columns>AuthorizedBy</columns> <!-- 16 -->
            <columns>BatchReferenceNumber</columns> <!-- 17 -->
            <columns>InvoiceSource</columns> <!-- 18 -->
            <columns>NumberOfLines</columns> <!-- 19 -->
            <columns>OriginatingInvoiceLineId</columns> <!-- 20 -->
            <columns>POLineNumber</columns> <!-- 21 -->
            <columns>LineItemDescription</columns> <!-- 22 -->
            <columns>LocationId</columns> <!-- 23 -->
            <columns>BuildingName</columns> <!-- 24 -->
            <columns>LineItemAmount</columns> <!-- 25 -->
            <columns>TaxableLineItemAmount</columns> <!-- 26 -->
            <columns>TaxAmountLineItem</columns> <!-- 27 -->
            <columns>CompanyId</columns> <!-- 28 -->
            <columns>GLAccountCode</columns> <!-- 29 -->
            <columns>Subsidiary</columns> <!-- 30 -->
            <columns>SubLedger</columns> <!-- 31 -->
            <columns>SubLedgerType</columns> <!-- 32 -->
            <columns>LedgerType</columns> <!-- 33 -->
            <columns>CostCenter</columns> <!-- 34 -->
            <columns>AccountBlock</columns> <!-- 35 -->
            <columns>GLAccountDescription</columns> <!-- 36 -->
            <columns>ClientAccountCode</columns> <!-- 37 -->
            <columns>WBSCode</columns> <!-- 38 -->
            <columns>OriginatingProjectNumber</columns> <!-- 39 -->
            <columns>OriginatingProjectSystem</columns> <!-- 40 -->
            <columns>ClientPONumber</columns> <!-- 41 -->
            <columns>WorkOrderNumber</columns> <!-- 42 -->
            <columns>WorkOrderCompletedDate</columns> <!-- 43 -->
            <columns>WorkOrderCreatedDate</columns> <!-- 44 -->
            <columns>CodingBlock1</columns> <!-- 45 -->
            <columns>CodingBlock2</columns> <!-- 46 -->
            <columns>CodingBlock3</columns> <!-- 47 -->
            <columns>CodingBlock4</columns> <!-- 48 -->
            <columns>CodingBlock5</columns> <!-- 49 -->
            <columns>CodingBlock6</columns> <!-- 50 -->
            <columns>CodingDate1</columns> <!-- 51 -->
            <columns>CodingDate2</columns> <!-- 52 -->
      </xsl:variable>      

      <!--Invoice hierarchy structure of Invoice/InvoiceLineItemDetail is flattened into a single line per InvoiceLineItemDetail-->
      <xsl:template match="/">
      
            <!--Create header row of attribute names-->
            <xsl:for-each select="msxsl:node-set($headers)/headers">
                  <xsl:text>"</xsl:text>
                  <xsl:value-of select="."/>
                  <xsl:text>"</xsl:text>
                  <xsl:if test="position() != last()">
                        <xsl:value-of select="$DL"/>
                  </xsl:if>
            </xsl:for-each>
            <xsl:value-of select="$CR"/>

            <xsl:for-each select="/*/*/*/*">
                  <xsl:variable name="NodeName" select="name(current())"/>
                  
                  <!-- If node is InvoiceLineItemDetail, get the values based on their element name (from the columns above -->
                  <xsl:if test="$NodeName = 'InvoiceLineItem'">
                        <xsl:variable name="property" select="ancestor-or-self::node()|descendant::node()"/>
                        <xsl:for-each select="msxsl:node-set($columns)/columns">
                              <!-- Extract the column name and value -->                  
                              <xsl:variable name="column" select="."/>      
                              <xsl:variable name="value" select="$property/*[name() = $column]"/>            
                              <xsl:text>"</xsl:text>
                              <xsl:choose>

            <xsl:when test="$column = 'WorkOrderCreatedDate' or $column = 'CodingDate1'">
              <xsl:text>null</xsl:text>
            </xsl:when>
           
                                    <xsl:when test="contains($column,'Date')">
                                          <xsl:variable name="year" select="msxsl:format-date($value, 'yyyy')"/>
                                          <xsl:variable name="month" select="msxsl:format-date($value, 'M')"/>
                                          <xsl:variable name="day" select="msxsl:format-date($value, 'd')"/>
                                          <xsl:variable name="isLeap" select="(($year mod 4)=0 and ($year mod 100)!=0) or ($year mod 400)=0"/>
                                          <xsl:choose>
                                                <xsl:when test="$isLeap = true()">
                                                      <xsl:choose>
                                                            <xsl:when test="$month = 1"><xsl:value-of select="($year*1000) + (0 + $day) - 1900000"/></xsl:when>
                                                            <xsl:when test="$month = 2"><xsl:value-of select="($year*1000) + (31 + $day) - 1900000"/></xsl:when> <!-- Jan = 31 -->
                                                            <xsl:when test="$month = 3"><xsl:value-of select="($year*1000) + (60 + $day) - 1900000"/></xsl:when> <!-- Feb = 29 -->
                                                            <xsl:when test="$month = 4"><xsl:value-of select="($year*1000) + (91 + $day) - 1900000"/></xsl:when> <!-- Mar = 31 -->
                                                            <xsl:when test="$month = 5"><xsl:value-of select="($year*1000) + (121 + $day) - 1900000"/></xsl:when> <!-- Apr = 30 -->
                                                            <xsl:when test="$month = 6"><xsl:value-of select="($year*1000) + (152 + $day) - 1900000"/></xsl:when> <!-- May = 31 -->
                                                            <xsl:when test="$month = 7"><xsl:value-of select="($year*1000) + (182 + $day) - 1900000"/></xsl:when> <!-- Jun = 30 -->
                                                            <xsl:when test="$month = 8"><xsl:value-of select="($year*1000) + (213 + $day) - 1900000"/></xsl:when> <!-- Jul = 31 -->
                                                            <xsl:when test="$month = 9"><xsl:value-of select="($year*1000) + (244 + $day) - 1900000"/></xsl:when> <!-- Aug = 31 -->
                                                            <xsl:when test="$month = 10"><xsl:value-of select="($year*1000) + (274 + $day) - 1900000"/></xsl:when> <!-- Sep = 30 -->
                                                            <xsl:when test="$month = 11"><xsl:value-of select="($year*1000) + (305 + $day) - 1900000"/></xsl:when> <!-- Oct = 31 -->
                                                            <xsl:when test="$month = 12"><xsl:value-of select="($year*1000) + (335 + $day) - 1900000"/></xsl:when> <!-- Nov = 30 -->
                                                      </xsl:choose>
                                                </xsl:when>
                                                <xsl:when test="$isLeap = false()">      
                                                      <xsl:choose>
                                                            <xsl:when test="$month = 1"><xsl:value-of select="($year*1000) + (0 + $day) - 1900000"/></xsl:when>
                                                            <xsl:when test="$month = 2"><xsl:value-of select="($year*1000) + (31 + $day) - 1900000"/></xsl:when> <!-- Jan = 31 -->
                                                            <xsl:when test="$month = 3"><xsl:value-of select="($year*1000) + (59 + $day) - 1900000"/></xsl:when> <!-- Feb = 28 -->
                                                            <xsl:when test="$month = 4"><xsl:value-of select="($year*1000) + (90 + $day) - 1900000"/></xsl:when> <!-- Mar = 31 -->
                                                            <xsl:when test="$month = 5"><xsl:value-of select="($year*1000) + (120 + $day) - 1900000"/></xsl:when> <!-- Apr = 30 -->
                                                            <xsl:when test="$month = 6"><xsl:value-of select="($year*1000) + (151 + $day) - 1900000"/></xsl:when> <!-- May = 31 -->
                                                            <xsl:when test="$month = 7"><xsl:value-of select="($year*1000) + (181 + $day) - 1900000"/></xsl:when> <!-- Jun = 30 -->
                                                            <xsl:when test="$month = 8"><xsl:value-of select="($year*1000) + (212 + $day) - 1900000"/></xsl:when> <!-- Jul = 31 -->
                                                            <xsl:when test="$month = 9"><xsl:value-of select="($year*1000) + (243 + $day) - 1900000"/></xsl:when> <!-- Aug = 31 -->
                                                            <xsl:when test="$month = 10"><xsl:value-of select="($year*1000) + (273 + $day) - 1900000"/></xsl:when> <!-- Sep = 30 -->
                                                            <xsl:when test="$month = 11"><xsl:value-of select="($year*1000) + (304 + $day) - 1900000"/></xsl:when> <!-- Oct = 31 -->
                                                            <xsl:when test="$month = 12"><xsl:value-of select="($year*1000) + (334 + $day) - 1900000"/></xsl:when> <!-- Nov = 30 -->
                                                      </xsl:choose>
                                                </xsl:when>
                                          </xsl:choose>        

            </xsl:when>      
                                    <xsl:otherwise>
                                          <xsl:value-of select="$value" disable-output-escaping="yes"/>
                                    </xsl:otherwise>
                              </xsl:choose>
                              <xsl:text>"</xsl:text>          
                              <xsl:if test="position() != last()">
                                    <xsl:value-of select="$DL"/>
                              </xsl:if>
                        </xsl:for-each>        
                        <xsl:value-of select="$CR"/>
                  </xsl:if>
            </xsl:for-each>

      </xsl:template>

</xsl:stylesheet>

----------------------------------------------

Here is my XML ( i need to clean all double quotes from text fields)

<?xml version="1.0" encoding="utf-8"?>
<root xmlns="http://integration.cbre.com/schemas/gcs/batchinvoice/v2">
  <Invoice xmlns:common="http://integration.cbre.com/schemas/gcs/common/v1">
    <ClientId>ATT</ClientId>
    <OriginatingInvoiceId>1752</OriginatingInvoiceId>
    <VendorId>236998</VendorId>
    <AlternativeVendorId>PRV-09-1301</AlternativeVendorId>
    <VendorInvoiceNumber>28</VendorInvoiceNumber>
    <InvoiceDate>2013-08-12T00:00:00</InvoiceDate>
    <InvoiceReceiveDate>2013-08-20T00:00:00</InvoiceReceiveDate>
    <GLDate>2013-08-21T20:53:03.779-05:00</GLDate>
    <Remark></Remark>
    <TotalInvoiceAmount>378.59</TotalInvoiceAmount>
    <CurrencyCode>USD</CurrencyCode>
    <StatusCode>
      <common:Code>Authorized</common:Code>
      <common:Description>Authorized</common:Description>
    </StatusCode>
    <ClientApprovalNumber>3000517524</ClientApprovalNumber>
    <InvoiceSource>COR</InvoiceSource>
    <NumberOfLines>2</NumberOfLines>
    <InvoiceLineItems>
      <InvoiceLineItem>
        <OriginatingInvoiceLineID>6790</OriginatingInvoiceLineID>
        <POLineNumber>5</POLineNumber>
        <LineItemDescription>1 man "Electrician" 2013-08-12T00:00:00</LineItemDescription>
        <LocationId>ATR000596</LocationId>
        <BuildingName>Canyon Rd Store</BuildingName>
        <LineItemAmount>316.000000</LineItemAmount>
        <GLAccount>
          <CompanyId>51310</CompanyId>
          <GLAccountCode>51310</GLAccountCode>
          <AccountBlock>51310</AccountBlock>
          <GLAccountDescription>51310</GLAccountDescription>
        </GLAccount>
        <AdditionalCoding>
          <ClientPONumber />
          <WorkOrderNumber>0596000002</WorkOrderNumber>
          <WorkOrderCompletedDate>2013-08-12T16:46:21</WorkOrderCompletedDate>
          <WorkOrderCreatedDate>2013-08-01T06:06:00</WorkOrderCreatedDate>
          <CodingBlock1>Labor</CodingBlock1>
          <CodingBlock2>Electrical Wiring</CodingBlock2>
          <CodingBlock4>1 "man" Electrician</CodingBlock4>
          <CodingBlock5>Electrical</CodingBlock5>
        </AdditionalCoding>
      </InvoiceLineItem>
      <InvoiceLineItem>
        <OriginatingInvoiceLineID>6791</OriginatingInvoiceLineID>
        <POLineNumber>6</POLineNumber>
        <LineItemDescription>wiring, euipment, trip charge</LineItemDescription>
        <LocationId>ATR000596</LocationId>
        <BuildingName>Canyon Rd Store</BuildingName>
        <LineItemAmount>62.590000</LineItemAmount>
        <GLAccount>
          <CompanyId>51310</CompanyId>
          <GLAccountCode>51310</GLAccountCode>
          <AccountBlock>51310</AccountBlock>
          <GLAccountDescription>51310</GLAccountDescription>
        </GLAccount>
        <AdditionalCoding>
          <ClientPONumber />
          <WorkOrderNumber>0596000002</WorkOrderNumber>
          <WorkOrderCompletedDate>2013-08-12T16:46:21</WorkOrderCompletedDate>
          <WorkOrderCreatedDate>2013-08-01T06:06:00</WorkOrderCreatedDate>
          <CodingBlock1>Miscellaneous</CodingBlock1>
          <CodingBlock2>Electrical Wiring</CodingBlock2>
          <CodingBlock4>wiring, euipment, trip charge</CodingBlock4>
          <CodingBlock5>Electrical</CodingBlock5>
        </AdditionalCoding>
      </InvoiceLineItem>
    </InvoiceLineItems>
  </Invoice>
  <Invoice xmlns:common="http://integration.cbre.com/schemas/gcs/common/v1">
    <ClientId>ATT</ClientId>
    <OriginatingInvoiceId>5188</OriginatingInvoiceId>
    <VendorId>242349</VendorId>
    <AlternativeVendorId>PRV-03-207</AlternativeVendorId>
    <VendorInvoiceNumber>0313000005</VendorInvoiceNumber>
    <InvoiceDate>2013-08-22T00:00:00</InvoiceDate>
    <InvoiceReceiveDate>2013-08-22T00:00:00</InvoiceReceiveDate>
    <GLDate>2013-09-09T18:50:42.734-07:00</GLDate>
    <Remark>Glass in door was replaced and the stickers stating the store hours and "use other door" and arrow need to be replaced on the glass.</Remark>
    <TotalInvoiceAmount>359.9</TotalInvoiceAmount>
    <CurrencyCode>USD</CurrencyCode>
    <StatusCode>
      <common:Code>Authorized</common:Code>
      <common:Description>Authorized</common:Description>
    </StatusCode>
    <ClientApprovalNumber>6000151886</ClientApprovalNumber>
    <InvoiceSource>COR</InvoiceSource>
    <NumberOfLines>3</NumberOfLines>
    <InvoiceLineItems>
      <InvoiceLineItem>
        <OriginatingInvoiceLineID>7998</OriginatingInvoiceLineID>
        <POLineNumber>48</POLineNumber>
        <LineItemDescription>Change hours and "use other door" sign 2013-08-22T00:00:00</LineItemDescription>
        <LocationId>ATR000313</LocationId>
        <BuildingName>Conyers Store</BuildingName>
        <LineItemAmount>230.000000</LineItemAmount>
        <GLAccount>
          <CompanyId>51835</CompanyId>
          <GLAccountCode>51835</GLAccountCode>
          <AccountBlock>51835</AccountBlock>
          <GLAccountDescription>51835</GLAccountDescription>
        </GLAccount>
        <AdditionalCoding>
          <ClientPONumber />
          <WorkOrderNumber>0313000005</WorkOrderNumber>
          <WorkOrderCompletedDate>2013-08-22T09:58:58</WorkOrderCompletedDate>
          <WorkOrderCreatedDate>2013-08-12T09:46:00</WorkOrderCreatedDate>
          <CodingBlock1>Labor</CodingBlock1>
          <CodingBlock2>Store Hours Signage</CodingBlock2>
          <CodingBlock4>Change hours and "use other door" sign</CodingBlock4>
          <CodingBlock5>Signage</CodingBlock5>
        </AdditionalCoding>
      </InvoiceLineItem>
      <InvoiceLineItem>
        <OriginatingInvoiceLineID>7999</OriginatingInvoiceLineID>
        <POLineNumber>49</POLineNumber>
        <LineItemDescription>vinyl hours and custom sign</LineItemDescription>
        <LocationId>ATR000313</LocationId>
        <BuildingName>Conyers Store</BuildingName>
        <LineItemAmount>120.000000</LineItemAmount>
        <GLAccount>
          <CompanyId>51835</CompanyId>
          <GLAccountCode>51835</GLAccountCode>
          <AccountBlock>51835</AccountBlock>
          <GLAccountDescription>51835</GLAccountDescription>
        </GLAccount>
        <AdditionalCoding>
          <ClientPONumber />
          <WorkOrderNumber>0313000005</WorkOrderNumber>
          <WorkOrderCompletedDate>2013-08-22T09:58:58</WorkOrderCompletedDate>
          <WorkOrderCreatedDate>2013-08-12T09:46:00</WorkOrderCreatedDate>
          <CodingBlock1>Materials</CodingBlock1>
          <CodingBlock2>Store Hours Signage</CodingBlock2>
          <CodingBlock4>vinyl hours and custom sign</CodingBlock4>
          <CodingBlock5>Signage</CodingBlock5>
        </AdditionalCoding>
      </InvoiceLineItem>
      <InvoiceLineItem>
        <OriginatingInvoiceLineID>7997</OriginatingInvoiceLineID>
        <POLineNumber>50</POLineNumber>
        <LineItemDescription>Tax</LineItemDescription>
        <LocationId>ATR000313</LocationId>
        <BuildingName>Conyers Store</BuildingName>
        <LineItemAmount>9.900000</LineItemAmount>
        <GLAccount>
          <CompanyId>51835</CompanyId>
          <GLAccountCode>51835</GLAccountCode>
          <AccountBlock>51835</AccountBlock>
          <GLAccountDescription>51835</GLAccountDescription>
        </GLAccount>
        <AdditionalCoding>
          <ClientPONumber />
          <WorkOrderNumber>0313000005</WorkOrderNumber>
          <WorkOrderCompletedDate>2013-08-22T09:58:58</WorkOrderCompletedDate>
          <WorkOrderCreatedDate>2013-08-12T09:46:00</WorkOrderCreatedDate>
          <CodingBlock1>Tax</CodingBlock1>
          <CodingBlock2>Store Hours Signage</CodingBlock2>
          <CodingBlock4>Tax</CodingBlock4>
          <CodingBlock5>Signage</CodingBlock5>
        </AdditionalCoding>
      </InvoiceLineItem>
    </InvoiceLineItems>
  </Invoice>
</root>

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Thanks