// JavaScript Document
function switchTopBanner(){
	var clsssName = "topBanner";
	if(clsssName){
		var topBanners = $("."+clsssName);
		if(topBanners){
			changDisplay(topBanners);
			setTimeout(switchTopBanner,2000);
		}
	}
}

function changDisplay(divList){
	if(divList){
		var len = divList.length;
			for(var i=0;i<len;i++){
				if(divList[i].style.display=='block'){
					if(i==len-1){
						divList[i].style.display='none'
						divList[0].style.display='block'
						break;
					}else{
						divList[i].style.display='none'
						divList[i+1].style.display='block'
						break;
					}
				}
			}
	}
}