function winsize(){
var x=342;
var y=291;
var xx=(window.screen.width-x)/2;
var yy=(window.screen.height-y)/2;
window.resizeTo(x,y);
window.moveTo(xx,yy);
setTimeout("winsize()",50)
}

function openwin()
{window.open("pop.html","","width=342,height=291,toolbar=no,menubar=no,scrollbars=no, resizable=no,location=no, status=no,title=no") 
}