var messageBox='';
var extraMenu='';
function doNothing(){ return true;};
//window.onerror=doNothing;

function point(obj, imgloc)
{
	if (document.images) {
    	obj.src = imgloc;
	}
}

function ChangeClass (obj, class_name)
{
	obj.className = class_name;
}

function ChangeClassById (id, class_name)
{
	if(document.getElementById(id))
		document.getElementById(id).className = class_name;
}

function SwapClasses (obj, class_name1, class_name2)
{
	if (document.getElementById(obj).className == class_name1)
	{
		document.getElementById(obj).className = class_name2;
	}
	else
	{
		document.getElementById(obj).className = class_name1;
	}
}