function changeTab(id) 
   	{
		var thisID = id;
//		var blockID = id + "_block";
		
		document.getElementById('expand').style.display = "none";
		document.getElementById('collaspe').style.display = "none";
		
			document.getElementById(thisID).style.display = "block";
//			document.getElementById(blockID).style.display = "block";	
	}