function openwindow()
{
var width=screen.availWidth;
var height=screen.availHeight;
var bw = 0;
var bh = 0;
paramString = "'toolbar=yes,location=yes,status=yes,menubar=yes,scrollbars=no,resizable=yes,left="+bw+",top="+bh+",width="+width+",height="+height+"'";
window.open("portrait.htm","rothtimewin",paramString);
}