function checkClear()
{
	EMail = document.zahlung.EMail.value;
	if(EMail=="user@domain.de")
	{
		document.zahlung.EMail.value= "";
	}
}

function checkEMail()
{
	mail = document.zahlung.EMail.value; 
	retvalue = confirm('Richtige EMail-Adresse angegeben? Ihre eMail-Adresse lautet: '+mail); 
	return retvalue;
}


function bookmarksite(title,url)
		  {
			if (window.sidebar)
			{
				window.sidebar.addPanel(title, url, "");
			}
			else if(window.opera && window.print)
			{ 
				var elem = document.createElement('a');
				elem.setAttribute('href',url);
				elem.setAttribute('title',title);
				elem.setAttribute('rel','sidebar');
				elem.click();
			} 
			else if(document.all)
			{
				window.external.AddFavorite(url, title);
			}
		  }