var popup_count = 0;
function Popup_Window (name, width, height, replace_win, xpos, ypos, scrollbars, resizable, status) {
	if(!replace_win) {
		popup_count++;
		var popup_name = 'win'+popup_count;
	} else {
		var popup_name = 'win';
	}
	if(!width) width=400;
	if(!height) height=250;
	if(height > (screen.height - 20)) height = (screen.height - 20);
	if(!xpos) xpos = (screen.width - width) / 2;
	if(!ypos) ypos = (screen.height - 20 - height) / 2;
	if(!scrollbars) scrollbars = 'yes';
	if(!resizable) resizable = 'yes';
	if(!status) status = 'yes';
	popup_window = open(name, popup_name, 'width='+width+',height='+height+',screenx='+xpos+',screeny='+ypos+',left='+xpos+',top='+ypos+',scrollbars='+scrollbars+',resizable='+resizable+',status='+status);
	if (popup_window.opener == null) popup_window.opener = self;
	popup_window.focus();
}