var is = new Object();
{
	is.ver = navigator.appVersion.substring(0,1);

	if (navigator.appName == "Netscape")
	{
		is.ns = true;
		eval("is.ns" + is.ver + " = true;")
		if (is.ver >= 3)
			is.ng3 = true;
	}
	else if (navigator.appName.toLowerCase().indexOf("microsoft") >= 0)
	{
		is.ver = navigator.appVersion.substr(navigator.appVersion.toLowerCase().indexOf("msie") + 5, 1)
		is.ie = true;
		eval("is.ie" + is.ver + " = true;")
		if (is.ver >= 3)
			is.ig3 = true;
	}
	else
		is.bu = true;

	if (navigator.appVersion.toLowerCase().indexOf("win") > 0)
		is.win = true;
	else if (navigator.appVersion.toLowerCase().indexOf("mac") > 0)
		is.mac = true;
	else if (navigator.appVersion.toLowerCase().indexOf("x11") > 0)
		is.x11 = true;
	else
		is.osu = true;
}

function openPopUp(wert)
{
	if ((screen.width) < 1024)
	{
		if(is.mac)
			Win2 = window.open(wert,'ChristPopup','width=800,height=600,left=0,top=0,resizable=no,scrollbars=yes,screenX=0,screenY=0');
		else
			Win2 = window.open(wert,'ChristPopup','width=790,height=534,left=0,top=0,resizable=no,scrollbars=yes,screenX=0,screenY=0');
	}
	else if ((screen.width) == 1024)
	{
		Win2 = window.open(wert,'ChristPopup','width=1010,height=700,left=0,top=0,resizable=no,scrollbars=no,screenX=0,screenY=0');
	}
	else
	{
		if (is.mac)
			y_posiotion = 397;
		else
			y_posiotion = 378;
		x_position=510;
  		w = 1010;
  		h = 690;
		scrx = (screen.width)/2-x_position;
		scry = (screen.height)/2-y_posiotion;
		Win2 = window.open(wert,'ChristPopup','width='+w+',height='+h+',left='+scrx+',top='+scry+',resizable=no,scrollbars=no,screenX='+scrx+',screenY='+scry+'');
	}
	Win2.focus();
}