var scr_w = screen.availWidth;
var scr_h = screen.availHeight;
var browseWidth, browseHeight;

if (document.layers){
   browseWidth=window.outerWidth;
   browseHeight=window.outerHeight;
}
if (document.all){
   browseWidth=document.body.clientWidth;
   browseHeight=document.body.clientHeight;
}

var targetX = (scr_w-browseWidth)/2;
var targetY = (scr_h-browseHeight)/3;

if (scr_w != browseWidth|| scr_h != browseHeight) {
   //window.resizeTo(scr_w, scr_h);
   window.moveTo(targetX, targetY);
}