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javascript function not working with datalist

Posted By:      Posted Date: August 25, 2010    Points: 0   Category :ASP.Net

I have a datalist and there is a check box within this datalist in a .ascx page.  But I have to have an image out side the datalist.  So here is the code and its not owrking.  When I click on the image, I dont see any alert box. 


<script Language="JavaScript" type="text/javascript">


function validate_checkbox()



// set var checkboxSelect to zero

var checkboxSelect = 0;

var sProducts = "";


var multiCheck = window.document.forms["frmCompare"].CompareCheck.length;


if (multiCheck != null)


    // Loop from zero to the one minus the number of checkbox button selections

    for (counter = 0; counter < window.document.forms["frmCompare"].CompareCheck.length; counter++)


        if (window.document.forms["frmCompare"].CompareCheck[counter].checked)


            var seperator = (checkboxSelect > 0)?",":"";

            sProducts += sep

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