function doPrint()
{
var imglist = document.getElementById("coupon").getElementsByTagName("img");
var htmltext= "";
for(var i=0;i<imglist.length;i++)
{
htmltext+= "<img src='"+imglist[i].src+"'/>";
}
document.body.innerHTML = htmltext;
document.body.style.textAlign = "left";
document.body.style.background = "none";
window.print();
}