var imCol=new Image;
var imColH=new Image;
var imExp=new Image;
var imExpH=new Image;
imCol.src="/portal/images/yums/collapse.gif";
imColH.src="/portal/images/yums/collapse_hover.gif";
imExp.src="/portal/images/yums/expand.gif";
imExpH.src="/portal/images/yums/expand_hover.gif";

function CF_omo(obj)
{
if(obj.src==imCol.src)
	obj.src=imColH.src;
else
	obj.src=imExpH.src;
}

function CF_omu(obj)
{
if(obj.src==imColH.src)
	obj.src=imCol.src;
else
	obj.src=imExp.src;
}

function CF_click(obj)
{
if(obj.src==imColH.src)
	{
	obj.parentElement.parentElement.nextSibling.style.display="none";
	
obj.src=imExpH.src;

	}
else
	{
	obj.parentElement.parentElement.nextSibling.style.display="block";
	
obj.src=imColH.src;

	}
}