function ValidateGbook(Form)
{
	if(!ValidateMessage(Form.Name.value,"Kein Namen angegeben") || !ValidateMessage(Form.Nachricht.value,"Keine Nachricht angegeben"))
	{
		return false;
	}
	else if(Form.Email.value != "" && Form.Email.value.search("@")<1)
	{
		alert("Ungültige Email-Adresse");
		return false;
	}
	return true;
}

function ValidatePmbox(Form)
{
	if(!ValidateMessage(Form.Title.value,"Kein Titel angegeben") || !ValidateMessage(Form.Message.value,"Keine Nachricht angegeben"))
	{
		return false;
	}
	return true;
}

function ChangeAdvertismentTyp(value)
{
	txtlink = get_object("TxtLinkReload");
	banner = get_object("BannerReload");
	if(value == 1)
	{
		txtlink.style.display= "";
		banner.style.display= "none";
	}
	else if(value == 2)
	{
		txtlink.style.display= "none";
		banner.style.display= "";

	}
}

function Popup(height,width,url) 
{ 
 var breite=height; 
 var hoehe=width; 
 var positionX=((screen.availWidth / 2) - breite / 2); 
 var positionY=((screen.availHeight / 2) - hoehe / 2); 
 pop=window.open('','Popup','toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,fullscreen=0,width='+breite+',height='+hoehe+',top=10000,left=10000'); 
 pop.resizeTo(breite,hoehe); 
 pop.moveTo(positionX,positionY); 
 pop.location=url; 
}