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Make <Div> Opaque

Posted on 2003-11-11
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Last Modified: 2010-05-18
Hi,

I'm looking (unsuccessfully so far) for a <div> tag property that make that hides other <div>'s beneath it:

My page is a dynamic scrolling (vertical only) table upon which I have a <div> table containing the headers and a <div> table that holds the tabled data. I am using the FlevOOware (shameless plug) Dreamweaver Extension that makes my header element scroll down the screen, maintaining position while the tabulated data scrolls beneath it, but the headers are transparent and the tabulated data is visible through the top layer.

Is there not a property to make my top div opaque??

Thanks in advance

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Question by:Harristonian
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Expert Comment

by:seanpowell
Comment Utility
I'm not familiar with the extension, so I don't know how the div is being treated with CSS.
If it's background has been set to transparent, you should be able to override it with an inline style:

<div style="background-color:#cccccc;"></div>
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Author Comment

by:Harristonian
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The extension deals with repositioning the div in relation to any scroll events, there are no 'transparency' properties being set.  I have tried your suggestion before posting but to no avail.

There are no CSS styles being employed in the page (as yet) as i am testing on a mockup version.

Problem is, that I currently have the page split across a mainpage (that contains the column headers) and an inline frame that contains the results. I want the header to be contained within the same page as the client has insisted that the headers be sticky when scrolling down through multiple records, this is fine if you have opacity, but i cant achieve,. hence the headers in different page (i know this sucks but hey it a solution.....

The problem with the table dimensions on the two pages is that the data table containing form elements (text boxes) that are editable, hence screen res comes into play when sizing the elements. If there was a way of specifying <td> width without being over ridden by the text type size then I'd be laughing. I just can't get the table sizes to match up on various screen res's :(.

Incidentally, this form is for IE6 users only. Dont worry about NS compat.......
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Author Comment

by:Harristonian
Comment Utility
Maybe it would help to post the code:

<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

<script language="JavaScript" type="text/JavaScript">
<!--
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function flevDivPositionValue(sDiv, sProperty) { // v2.1, Marja Ribbers-de Vroed, FlevOOware
      this.opera = (window.opera); // Opera 5+
      this.ns4 = (document.layers); // Netscape 4.x
      this.ns6 = (document.getElementById && !document.all && !this.opera); // Netscape 6+
      this.ie = (document.all);  // Internet Explorer 4+
    var sValue = ""; docObj = eval("MM_findObj('" + sDiv + "')"); if (docObj == null) {return 0;}
      if ((sProperty == "left") || (sProperty == "top")) {
            if (!this.ns4) {docObj = docObj.style;}
            sValue = eval("docObj." + sProperty);
            if ((this.ie) && (sValue == "")) { // IE (on PC) bug with nested layers
                  if (sProperty == "top") { sValue = eval(sDiv + ".offsetTop"); }
                  else { sValue = eval(sDiv + ".offsetLeft"); }
            };
      }
      else {
            if (this.opera) {
                  docObj = docObj.style;
                  if (sProperty == "height") { sValue = docObj.pixelHeight; }
                  else if (sProperty == "width") { sValue = docObj.pixelWidth; }
            }
            else if (this.ns4) {sValue = eval("docObj.clip." + sProperty);}
            else if (this.ns6) {sValue = document.defaultView.getComputedStyle(docObj, "").getPropertyValue(sProperty); }
          else if (this.ie) {
                  if (sProperty == "width") { sValue = eval(sDiv + ".offsetWidth"); }
                  else if (sProperty == "height") { sValue = eval(sDiv + ".offsetHeight"); }
            }
         }
      sValue = (sValue == "") ? 0 : sValue;
      if (isNaN(sValue)) { if (sValue.indexOf('px') > 0) { sValue = sValue.substring(0,sValue.indexOf('px')); } }
      return parseInt(sValue);
}

function flevPersistentLayer() { // v3.3, Marja Ribbers-de Vroed, FlevOOware
      var sD = arguments[0], oD = eval("MM_findObj('" + sD + "')"), iWW, iWH, iSX, iSY, iT = 10, sS = "";
      if (!document.layers) {oD = oD.style;}
      if (oD.tmpTimeout != null) {clearTimeout(oD.tmpTimeout);}
      var sXL = arguments[1], sXC = arguments[2], sXR = arguments[3], sYT = arguments[4], sYC = arguments[5], sYB = arguments[6];
      var iS = (arguments.length > 7) ? parseInt(arguments[7]) : 0, iPx = (arguments.length > 8) ? parseInt(arguments[8]) : 0;
      if (window.innerWidth) { // NS4, NS6 and Opera
            var oW = window; iWW = oW.innerWidth; iWH = oW.innerHeight; iSX = oW.pageXOffset; iSY = oW.pageYOffset; }
      else if (document.documentElement && document.documentElement.clientWidth) { // IE6 in standards compliant mode
            var oDE = document.documentElement; iWW = oDE.clientWidth; iWH = oDE.clientHeight; iSX = oDE.scrollLeft; iSY = oDE.scrollTop; }
      else if (document.body) { // IE4+
            var oDB = document.body; iWW = oDB.clientWidth; iWH = oDB.clientHeight; iSX = oDB.scrollLeft; iSY = oDB.scrollTop; }
      else {return;}
      var iCX = iNX = flevDivPositionValue(sD, 'left'), iCY = iNY = flevDivPositionValue(sD, 'top');
      if (sXL != "") {iNX = iSX + parseInt(sXL);}
      else if (sXC != "") {iNX = Math.round(iSX + (iWW/2) - (flevDivPositionValue(sD, 'width')/2));}
      else if (sXR != "") {iNX = iSX + iWW - (flevDivPositionValue(sD, 'width') + parseInt(sXR));}
      if (sYT != "") {iNY = iSY + parseInt(sYT);}
      else if (sYC != "") {iNY = Math.round(iSY + (iWH/2) - (flevDivPositionValue(sD, 'height')/2));}
      else if (sYB != "") {iNY = iSY + (iWH - flevDivPositionValue(sD, 'height') - parseInt(sYB));}
      if ((iCX != iNX) || (iCY != iNY)) {
            if (iS > 0) {
                  if (iPx > 0) { iT = iS;
                        var iPxX = iPx, iPxY = iPx, iMX = Math.abs(iCX - iNX), iMY = Math.abs(iCY - iNY);
                        // take care of diagonal movement
                        if (iMX < iMY) {iPxY = (iMX != 0) ? ((iMY/iMX)*iPx) : iPx;}
                        else {iPxX = (iMY != 0) ? ((iMX/iMY)*iPx) : iPx;}
                        if (iPxX >= iMX) {iPxX = Math.min(Math.ceil(iPxX), iPx);}
                        if (iPxY >= iMY) {iPxY = Math.min(Math.ceil(iPxY), iPx);}
                        // temporary X/Y coordinates
                        if ((iCX < iNX) && (iCX + iPxX < iNX)) {iNX = iCX + iPxX;}
                        if ((iCX > iNX) && (iCX - iPxX > iNX)) {iNX = iCX - iPxX;}
                        if ((iCY < iNY) && (iCY + iPxY < iNY)) {iNY = iCY + iPxY;}
                        if ((iCY > iNY) && (iCY - iPxY > iNY)) {iNY = iCY - iPxY;} }
                  else {
                        var iMX = ((iNX - iCX) / iS), iMY = ((iNY - iCY) / iS);
                        iMX = (iMX > 0) ? Math.ceil(iMX) : Math.floor(iMX); iNX = iCX + iMX;
                        iMY = (iMY > 0) ? Math.ceil(iMY) : Math.floor(iMY); iNY = iCY + iMY; } }
            if ((parseInt(navigator.appVersion)>4 || navigator.userAgent.indexOf("MSIE")>-1) && (!window.opera)) {sS="px";}
            if (iMX != 0) {eval("oD.left = '" + iNX + sS + "'");}
            if (iMY != 0) {eval("oD.top = '" + iNY + sS + "'");} }
      var sF = "flevPersistentLayer('" + sD + "','" + sXL + "','" + sXC + "','" + sXR + "','" + sYT + "','" + sYC + "','" + sYB + "'," + iS + "," + iPx + ")";
      oD.tmpTimeout = setTimeout(sF,10);
}

function flevInitPersistentLayer() { // v3.3, Marja Ribbers-de Vroed, FlevOOware
      if (arguments.length < 8) {return;}
      var sD = arguments[0]; if (sD == "") {return;}
      var      oD = eval("MM_findObj('" + sD + "')"); if (!oD) {return;}
      var iCSS = parseInt(arguments[1]);
      var sXL = arguments[2], sXC = arguments[3], sXR = arguments[4], sYT = arguments[5], sYC = arguments[6], sYB = arguments[7];
      var iS = (arguments.length > 8) ? parseInt(arguments[8]) : 0, iPx = (arguments.length > 9) ? parseInt(arguments[9]) : 0;
      if (iCSS != 0) { if (!document.layers) {oD = oD.style;} sXL = parseInt(oD.left), sYT = parseInt(oD.top);}
      var sF = "flevPersistentLayer('" + sD + "','" + sXL + "','" + sXC + "','" + sXR + "','" + sYT + "','" + sYC + "','" + sYB + "'," + iS + "," + iPx + ")";
      eval(sF);
}
//-->
</script>
</head>

<body onLoad="flevInitPersistentLayer('Layer1',0,'0','','','0','','')">
<div id="Layer1" style="position:absolute; width:95%; height:115px; z-index:1; background-color:#FFFFFF">
<table width=95% align="center">
<tr>
<td>Header 1</td><td bgcolor="#FFFFFF">Header 2</td><td bgcolor="#FFFFFF">Header 3</td><td bgcolor="#FFFFFF">Header 4</td>
</tr>
</table>
</div>

<div id="Layer2" style="position:absolute; width:95%; height:100px; z-index:2;">
<%
Response.Write "<table width=95% align='center'>"
For i=0 to 100
      Response.Write "<tr>"
      For j=0 to 3      
            Response.Write "<td>Value " & j & "</td>"
      Next
      Response.Write "</tr>"
Next
%>
</body>
</html>


Dunno if this helps, but the idea is to hide the layer2 div beneath the scrolling layer1....
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Expert Comment

by:seanpowell
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Do you have a link that you can post to this page?
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LVL 31

Expert Comment

by:seanpowell
Comment Utility
Never mind - let me have a look..
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Accepted Solution

by:
seanpowell earned 100 total points
Comment Utility
Change the z-index properties:

z-index:1; for the header

z-index:0; for layer2 div
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Author Comment

by:Harristonian
Comment Utility
Giggle

Obviously - Wood and trees ya know.

Thanks very much. Outside views are invaluable
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Expert Comment

by:seanpowell
Comment Utility
I hear you - and thanks :-)
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