var width_offset = 10;
var height_offset = 32;

function show_window(url, name, scrollbars, width, height) {
	left_string = 
		"left=" + 
		((screen.availWidth - width - width_offset) / 2);
	top_string = 
		"top=" + 
		((screen.availHeight - height - height_offset) / 2);		

	scrollbars_string = "scrollbars="
	if(scrollbars)
		scrollbars_string += "yes";
	else
		scrollbars_string += "no";
		
	appearance_string = 
		"dependent=yes,height=" + height + 
		",width=" + width + "," + left_string + 
		"," + top_string + "," + height + "location=no," +
		"menubar=no,resizable=yes,status=no," + 
		"toolbar=no," + scrollbars_string;			
	win = window.open(url, name, appearance_string);
	win.focus();
	
	//return win;
}

function show_max_window(url, name, scrollbars) {
	show_window(url, name, scrollbars, 
		screen.availWidth - width_offset, screen.availHeight - height_offset);
}