function rate(obj,oEvent,root,url,id){
	//==================
	// 图片地址设置
	//==================
	var imgSrc = root+'images/xing1.gif';
	var imgSrc_2 = root+'images/xing2.gif';
	//---------------------------------------------------------------------------
	if(obj.rateFlag) return;
		var e = oEvent || window.event;
		var target = e.target || e.srcElement;
		var imgArray = obj.getElementsByTagName("img");
		for(var i=0;i<imgArray.length;i++){
			imgArray[i]._num = i;
			imgArray[i].onclick=function(){
			if(obj.rateFlag) return;
			obj.rateFlag=true;
			var score=this._num+1;
			var urls=url;
			var dates="id="+id+"/"+score;
			$.ajax({
			 url: urls,
			 type:'POST',
			 dataType:'html',
			 data:dates,
			 success:function(msg){
				if(msg=='true'){  
					alert('Operation Successful!');
					window.history.go(0);
				}else if(msg=='false'){
					alert('Operation failed!');
				}else if(msg=='time'){
					alert('Every member can only rate once per day!');
				}else{
					alert('Please Login to rate!');
				}
			 }
			});	
		};
	}
	if(target.tagName=="IMG"){
		for(var j=0;j<imgArray.length;j++){
			if(j<=target._num){
				imgArray[j].src=imgSrc_2;
			} else {
				imgArray[j].src=imgSrc;
			}
		}
	}else{
		for(var k=0;k<imgArray.length;k++){
			imgArray[k].src=imgSrc;
		}
	}
}