Confusing code

I'm having trouble figuring out some code that's being used for a search function on my site. The original designer of it (who I can't contact) claimed that you could use this search and it would search for every variable used in the item. It doesn't work. So hopefully someone here can help me decipher this code. I should also mention that I need to move the search function to another part of the site.

<div class="PageTitle">
   <%=TR("Search")%>
    </div>
    <div id="NavSearch">
    <table cellpadding="0" cellspacing="0" border="0">
    <tr><td>
	
	<script type="text/javascript">
			function partSearch() {
			   var radio = document.getElementsByName("searchtype");
			   var x = document.nickform.searchtxt.value;
			   
			   if(radio[0].checked == true){
				   window.location = 'advancedsearch.asp?search=1&catid=0&SearchStr=&AllAnyExact=all&Region1=&Region2=&Region3=&Region4=&customs_criteria=1&cfs_txt_P='+x+'&cfs_txt_W=&PriceRangeCurrency=USD&PriceFrom=&PriceTo=&StartFrom=&StartTo=&EndFrom=&EndTo=&ExcludeStr=&OrderBy=end_asc&MaxResults=10&sbmtAdvSearch=Go#results';
				   
				   return false;				 
			   }
			   if(radio[1].checked == true){
				   window.location = 'advancedsearch.asp?search=1&catid=0&SearchStr='+x+'&AllAnyExact=all&chkTitleAndDesc=on&Region1=&Region2=&Region3=&Region4=&customs_criteria=1&cfs_txt_P=&cfs_txt_W=&cfs_txt_make=&cfs_txt_model=&cfs_txt_sh_weight=&cfs_txt_sh_dimensions=&PriceRangeCurrency=USD&PriceFrom=&PriceTo=&StartFrom=&StartTo=&EndFrom=&EndTo=&ExcludeStr=&OrderBy=end_asc&MaxResults=10&sbmtAdvSearch=Go#results';			   
				   
				   return false;				 
			   }			   
			}
		
		</script>
			
        <form action="search.asp" method="post" name="nickform">
        <input type="text" name="searchtxt" class="search_input" />
        <input class="button" type="submit" value="<%=TR("Go")%>" id="search" name="search" onClick="return partSearch();" /><br />-->
		<!--<input type="radio" name="searchtype" checked="checked" /><%=TR("Part Number")%><br />
		<input type="radio" name="searchtype" /><%=TR("Title &amp; Description")%><br />-->
<%
    if not SIMPLE_SEARCH_TITLE_ONLY then
%>
        <input type="radio" id="searchtype_0" name="searchtype" value="0"  /><%=TR("Title & Description")%><br />
<%
    else
%>
        <!--<input type="radio" id="searchtype_0" name="searchtype" value="0"  /><%=TR("Listing Title")%><br />-->
<%
    end if ' bTitleSearchOnly then
%>
        <!--<input type="radio" id="searchtype_1" name="searchtype" value="1"/><%=TR("Listing #")%><br />-->
 <!--       <input type="radio" id="searchtype_2" name="searchtype" value="2" /><%=TR("User")%><p />
        <input class="button" type="submit" name="adv_srch" value="<%=TR("Advanced Search")%>" />
        </form>
     </td></tr>
     </table>

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