function showelement(element) {
		
		var objReference = new Object();
			objReference = document.getElementById(element).style;
			objReference.visibility = "visible";
			objReference.display = "inline";
		
		}
function hideelement(element) {
		
		var objReference = new Object();
			objReference = document.getElementById(element).style;
			objReference.visibility = "hidden";
			objReference.display = "none";
		
		}
		
		
function switch_obj(obj){
			   if (getobj(obj).style.visibility == 'hidden' ){
			   
			   	showelement(obj);
			}else{
				hideelement(obj);
				}
			   
			   }