function addEvent(obj, event, funct) {  
	if (obj.attachEvent) { //IE  
		obj['e' + event + funct] = funct;  
		obj['x' + event + funct] = function() {  
			obj['e' + event + funct](window.event);  
		}  
		obj.attachEvent('on' + event, obj['x' + event + funct]);  
	} else // other browser  
		obj.addEventListener(event, funct, false);  
}

function removeEvent(obj, event, funct) {  
	if (obj.detachEvent) { // IE  
		obj.detachEvent('on' + event, obj[event + funct]);  
		obj['x' + event + funct] = null;  
	} else // other browser  
		obj.removeEventListener(event, funct, false );  
}