var showTimes=0;
function ShowJsImgs(aObjID,aTab){
	var aObj = document.getElementById("jsImgShowDiv");
	try {
		var aImgUrlObj = document.getElementById("jsImgShowUrl");	
	}catch(e) {};
	
	var aImgUrl = arguments[2] ?  arguments[2]: "http://www.77.net/"
	if (aTab==0){ //ʱţ
		showTimes ++;
		if (showTimes >3) {
		  showTimes = 1;
		};
		aObj.src=imgUrl[showTimes];		
	}else{
		aObj.src=imgUrl[aTab];				
	}
	if (aImgUrlObj){
		aImgUrlObj.href =aImgUrl;	
	}
}

setInterval("ShowJsImgs('jsImgShowDiv',0)",5000);