function getElementPosition(element) {
        var pos = {x:0, y:0};
    	if (element.offsetParent) {
    		pos.x = element.offsetLeft
    		pos.y = element.offsetTop
    		while (element = element.offsetParent) {
    			pos.x += element.offsetLeft
    			pos.y += element.offsetTop
    		}
    	}
    	return pos;
    }
    
    function getXY(e) {
        var pos = {x:0, y:0};
        pos.x = (window.Event) ? e.pageX : event.clientX;
        pos.y = (window.Event) ? e.pageY : event.clientY;
        return pos;
    }
    
    function addLoadEvent(func){	
        var oldonload = window.onload;
        if (typeof window.onload != 'function'){
            window.onload = func;
        } else {
            window.onload = function(){
                oldonload();
                func();
            }
        }
    }