Invalid argument in IE 7

Hi there,

I'm getting an  error when I dynamically write a div with a javascript function call inside it.  The error is only happening with I, FF and Safari seem to be working correctly. If you got to the page in IE and then refresh it or try to close the window the error dialog appears.

http://wellcom.net.au/mynightmare.aspx

What am I missing?

Sean

------ c# code
 
 divThumbs.InnerHtml = String.Concat("<a href=\"#\" onclick=\"mainScreen.LoadServerControlHtml('Management',{'pageID':3,'data':" + xDocList[i].Attributes["id"].InnerText + "},'methodHandlers.BeginRecieve');\" onmouseover=\"setClassName('ctl00_mainContent_" + _docListCnt + "','managmentThumbGlow');\" onmouseout=\"setClassName('ctl00_mainContent_" + _docListCnt + "','managmentThumb');\"><img src=\"images/", xDocList[i].ChildNodes[2].InnerText, "\" border=\"0\" /><a/>");
 
 
-------- actual generated code
 
    <!-- start little thumbs //-->
 
        <div class="plcHolder"><div id="ctl00_mainContent_1" class="managmentThumb"><a href="#" onclick="mainScreen.LoadServerControlHtml('Management',{'pageID':3,'data':5},'methodHandlers.BeginRecieve');" onmouseover="setClassName('ctl00_mainContent_1','managmentThumbGlow');" onmouseout="setClassName('ctl00_mainContent_1','managmentThumb');"><img src="images/ourpeople/Grant-glover.jpg" border="0" /><a/></div><div class="namesText">Wayne Sidwell</div><div class="titleText">Executive Chairman & Chief Executive Officer</div></div><div class="plcHolder"><div id="ctl00_mainContent_2" class="managmentThumb"><a href="#" onclick="mainScreen.LoadServerControlHtml('Management',{'pageID':3,'data':6},'methodHandlers.BeginRecieve');" onmouseover="setClassName('ctl00_mainContent_2','managmentThumbGlow');" onmouseout="setClassName('ctl00_mainContent_2','managmentThumb');"><img src="images/ourpeople/Grant-glover.jpg" border="0" /><a/></div><div class="namesText">Steve Rees</div><div class="titleText">Chief Operating Officer</div></div><div class="plcHolder"><div id="ctl00_mainContent_3" class="managmentThumb"><a href="#" onclick="mainScreen.LoadServerControlHtml('Management',{'pageID':3,'data':7},'methodHandlers.BeginRecieve');" onmouseover="setClassName('ctl00_mainContent_3','managmentThumbGlow');" onmouseout="setClassName('ctl00_mainContent_3','managmentThumb');"><img src="images/ourpeople/Grant-glover.jpg" border="0" /><a/></div><div class="namesText">Kerry Smith</div><div class="titleText">Non Executive Director</div></div>
        <!-- end little thumbs //-->

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