var openedWin = null;
var wpercent = 100;
function launch ()
{
	var args = launch.arguments;
	var url = args[0];
	var width = args[1];
	var height = args[2];
	if (!url || !width || !height)
	{
		alert ("Error");
	}
	else if (width > screen.availWidth || height > screen.availHeight)
	{
		var targetW = screen.availWidth - 8;
		wpercent = Math.floor ((targetW * 100) / width);
		var targetH = Math.floor ((height * wpercent) / 100);
		width = targetW;
		height = targetH;
		_launch (url, width, height);
	}
	else
	{
		_launch (url, width, height);
	}
}
function _launch ()
{
	var args = _launch.arguments;
	if(args.length < 3)
	{
		alert('Wrong amount of arguments');
		return
	}
	closeChild ();
	var url = args[0];
	var width = args[1];
	var height = args[2];
	var resizable = args[3] ? "yes" : "no";
	var scrollbars = args[4] ? "yes" : "no";
	var toolbar = args[5] ? "yes" : "no";
	var menubar = args[6] ? "yes" : "no";
	var status = args[7] ? "yes" : "no";
	var address = args[8] ? "yes" : "no";
	var directories = args[9] ? "yes" : "no";
	var NewX = Math.max(0, Math.floor ((screen.availWidth - (width + 8)) / 2));
	var NewY = Math.max(0, Math.floor ((screen.availHeight - (height + 27)) / 2));
	var params = '';
	params += "width=" + width;	// 1
	params += ",height=" + height;	// 2
	params += ",screenx=" + NewX;
	params += ",screeny=" + NewY;
	params += ",left=" + NewX;
	params += ",top=" + NewY;
	params += ",resizable=" + resizable;	// 3
	params += ",scrollbars=" + scrollbars;	// 4
	params += ",toolbar=" + toolbar;	// 5
	params += ",menubar=" + menubar;	// 6
	params += ",status=" + status;	// 7
	params += ",location=" + address;	// 8
	params += ",directories=" + directories;	// 9
	openedWin = window.open (url, "", params);
}
function closeChild ()
{
	if (openedWin != null)
	{
		if (!openedWin.closed)
		{
			openedWin.close ();
		}
	}
}