function hotelbooking(hotelid,campaign_id,txtindate,txtoutdate){
var width="980" //设置iframe的宽度
var height="1400" //设置iframe的高度
document.write("<iframe frameborder=0 height="+height+" width="+width+" src='http://travel.elong.com/hotels/details.aspx?hotelid="+hotelid+"&amp;campaign_id="+campaign_id+"&txtindate="+txtindate+"&txtoutdate="+txtoutdate+"'></iframe>")
}