var win;
function popup(name,url,width,height,resize)
{
	width=Math.min(width,screen.width);
	height=Math.min(height,screen.height);
	var winleft=(screen.width-width)/2;
	var wintop=(screen.height-height)/2;
	var properties="height="+height+",width="+width+",top="+wintop+",left="+winleft+",scrollbars=1";
	
	if(resize)
	{
		properties+=",noresizable";
	}
	
	win=window.open(url,name,properties);
	
	if(parseInt(navigator.appVersion)>=4)
	{
		win.window.focus();
	}
}
function popup2(name, page, w, h, scroll) {
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	var winprop  = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable';
	win = window.open(page,name,winprop);
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}
function closeWindow()
{
	window.close();
}