function SwitchMenu(obj){
		if(document.getElementById){
			var el = document.getElementById(obj);
			var ar = document.getElementById("cont").getElementsByTagName("div");
			if(el.style.display == "none"){
				for (var i=0; i<ar.length; i++){
					ar[i].style.display = "none";
				}
				el.style.display = "block";
			}else{
				el.style.display = "none";
			}
		}
	}
	function ChangeClass(menu, newClass) { 
		if (document.getElementById) { 
			document.getElementById(menu).className = newClass;
	 	}
	}
      function changePic(objName,picName) {
           document.getElementById(objName).src=picName
      }