window.onload=function() {
   dispop1();
}
window.onresize=function() {
   dispop1();
}

function dispop1() {
   var k,l;
   var el1 = $("mt1");
   var pos1 = Position.cumulativeOffset(el1);
   k= pos1[0]+305;
   l= pos1[1]+175;
   $("pop1").style.left=k+"px";
   $("pop1").style.top=l+"px"; 
}