/*功能：首页tab广告切换*/
function adsTab(adsID,adsPos,adsCount){
	for(var i = 1;i <= adsCount;i++){
		if(i == adsPos){
			document.getElementById(adsID + "_" + i + "_tab").className=adsID + "_tab_on";
			document.getElementById(adsID + "_" + i + "_body").style.display = "";
		}else{
			document.getElementById(adsID + "_" + i + "_tab").className=adsID + "_tab_off";
			document.getElementById(adsID + "_" + i + "_body").style.display = "none";
		}
	}
}