function foldupdown(obj, headerDiv){

var objHeader = document.getElementById(headerDiv);
var objLink = obj;
var objBox = $(objLink.parentNode.id + "_down");

    if (objBox.style.display == "none") 
    {
	    Effect.BlindDown(objBox, {duration:0.5});		    	    
        SetClass(objHeader, "mastAccActiveHeader");
    } 
    else 
    {
	    Effect.BlindUp(objBox, {duration:0.5});	
        SetClass(objHeader, "mastAccInactiveHeader");
    }
}

function SetClass(obj, className)
{
    obj.setAttribute("class", className);
    obj.setAttribute("className", className);
}