/************************************************
 Purpose: To show/hide element on HTML page
 Author:  Billy Cheng
 Date:    April 15, 2007
 ***********************************************/
function Collapse_Expand(element_to_collapse)
{
    var el;

    el = document.all[element_to_collapse];

    if (el != null) 
    {
        if (el.style.display == "none")
        {
            el.style.display = "";
        }
        else
        {
            el.style.display = "none";
        }
    }
        
}