function dropImghandler(i){
showObj(i.dataTransfer);
i.preventDefault();
var img=document.getElementById(i.dataTransfer.getData("imgId"));
i.target.appendChild(img);
}
function showObj(obj){
var s="";
for(var k in obj){
s+=k+":"+obj[k]+"<br />"
}
msgDiv.innerHTML=s;
}