//for ff
if(document.addEventListener)
{	 
    function __Eventadd ( element , eventType , handle )
	{
	    element.addEventListener( eventType , handle , false );
	}
	function __Eventremove ( element , eventType , handle )
	{
	    element.removeEventListener( eventType , handle , false );
	}
}
//for ie
else if(document.attachEvent)
{
    function __Eventadd ( element , eventType , handle )
	{
	    element.attachEvent( 'on'+eventType , handle );
	}
	function __Eventremove ( element , eventType , handle )
	{
	    element.detachEvent( 'on'+eventType , handle );
	}
}