clickEvent.js

<script type="text/javascript">
function addEventSimple(obj,evt,fn){
	if(obj.addEventListener){
		obj.addEventListener(evt,fn,false);
	}else if(obj.attachEvent){
		obj.attachEvent('on'+evt,fn);
	}
}
addEventSimple(window,'load',init);
function init(){
	addEventSimple(document,'click',clickFunc);
}
function clickFunc(e){
        // do some thing here..
}
</script>