var win=null;
function popup_picture ( mypage,myname,w,h,pos,infocus )
{
	if ( pos=="random" )
	{
		myleft = (screen.width)?Math.floor(Math.random()*(screen.width-w)):100;mytop=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;
	}

	if ( pos=="center" )
	{
		myleft = (screen.width)?(screen.width-w)/2:100;mytop=(screen.height)?(screen.height-h)/2:100;
	}
	else if ( (pos !='center' && pos !="random") || pos==null )
	{
		myleft = 0; mytop = 20;
	}
	
	settings = "width=" + w + ",height=" + h + ",top=" + mytop + ",left=" + myleft + ",scrollbars=no,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=yes";win=window.open(mypage,myname,settings);
	win.focus();
}