function TabSet(tab)
	{
	
	//put total muber of menu items here
	vTotalItems = 10;
	
	//set all div's back to invisible
	for (var i=1; i <= vTotalItems; i++)
	{
	document.getElementById(i).style.visibility="hidden";
	document.getElementById(i).style.position="absolute";
	}
	
	//set current div to visible	
	document.getElementById(tab).style.visibility="visible";
	document.getElementById(tab).style.position="relative";
	
	}