//show hide layers
function show(obj) {
	  eval("document.all." + obj + ".style.display='block'");
	}
	
	function clearIt(obj) {
	  eval("document.all." + obj + ".style.display='none'");
	}
	
	function showHideText(box,id)  
	{  
		var elm = document.getElementById(id)  
		elm.style.display = box.checked? "":"none" 
	}