function thumbevent(el, event_type){
		if(event_type=='focus'){
			addClassName(el, 'thumbfocused');
		}else{
			removeClassName(el);
		}
	}
	
	function iconevent(el, event_type){
		if(event_type=='focus'){
			addClassName(el, 'focused');
		}else{
			removeClassName(el);
		}
	}
	
	
	function addClassName(el, newclassname){
		var classname = el.className;
		el.className = classname + " " + newclassname
	}
	
	function removeClassName(el){
		var classname = el.className;
		el.className = classname.replace(/\b\w+$/, "");
		
	}