//动态加载页面
function ajaxLoadPage(url,target){
	var myAjax = new Ajax.Request( 
	url, 
		{ method: 'post', 
		requestHeaders:['Cache-Control','no-cache'],
		parameters: '',
		onComplete: report(target)
		});
}
var report=function(target){ 
       return function(req){ 
			 if (req.status == 200) { 
				$(target).innerHTML=req.responseText;
			}else{
				$(target).innerHTML="<font color='red'><b>加载失败!<b></font>";
			} 
       }; 
}