function checklogin() 
{				
	var kennung = document.forms[0].kennung.value;
	var passwort = document.forms[0].passwort.value;
						
	if (kennung.indexOf('@') != "-1") 
	{								
		with(document.forms[0])
		{
			kennung.name = "login_username";
			passwort.name = "secretkey";
				
			action = "https://webmail.kunden.clippernet.de/src/redirect.php";
			target = "_self";
			submit();
		}				
	}
	else if(kennung.indexOf('\\') != "-1")
	{
		var url = "https://exchange.kunden.clippernet.de/exchweb/bin/auth/owaauth.dll";
		var p = {destination:'https://exchange.kunden.clippernet.de/exchange',flags:'0',forcedownlevel:'0',trusted:'0',isutf8:'1',username:kennung,password:passwort};
  			
		var form = document.forms[0];	
	
		for (var k in p) 
		{
			var myInput = document.createElement("input");
			myInput.setAttribute("name", k);
			myInput.setAttribute("value", p[k]);
			myInput.setAttribute("type","hidden");
			form.appendChild(myInput);
		}	
			  
		document.body.appendChild(form);
		
		form.method = "post";
		form.action = url;
		form.submit();
			
		/*document.body.removeChild(form);*/
	}
	else {
		with(document.forms[0])
		{
			kennung.name = kennung.name;
			passwort.name = passwort.name;
			
			action = "http://support.clippernet.de/login.aspx";
			target = "_self";
			submit();
		}
	}
}