function AttachEvent(elementObj, eventName, eventHandlerFunctionName)
{
	if (elementObj.addEventListener)
	{
		// Non-IE browsers 
		elementObj.addEventListener(eventName, eventHandlerFunctionName, false);		  
	}
	else if (elementObj.attachEvent)
	{
 		// IE 6+    
		elementObj.attachEvent('on' + eventName, eventHandlerFunctionName);
	}
	else
	{
		// Older browsers     
		var currentEventHandler = elementObj['on' + eventName];    
		if (currentEventHandler == null)
		{
			elementObj['on' + eventName] = eventHandlerFunctionName;
		}
		else
		{
			elementObj['on' + eventName] = function(e) 
			{
				currentEventHandler(e); eventHandlerFunctionName(e); 
			}
    		}
  	}
}