function ckKon()
{
	var tpOut='Sie haben vergesen folgende Felder anzugeben:<br><ul>';
	var error=0;
	if(!document.getElementById('kdata1').value)
	{
		tpOut=tpOut+"<li>Name / Ansprechpartner</li>";
		error++;
	}
	if(!ckMail(document.getElementById('kdata3').value))
	{
		tpOut=tpOut+"<li>E-Mail</li>";
		error++;
	}
	if(!document.getElementById('kdata5').value)
	{
		tpOut=tpOut+"<li>Ihre Nachricht</li>";
		error++;
	}
	tpOut=tpOut+"</ul>";	
	
	if(error>0)	
	{
		document.getElementById("konStatus").innerHTML=tpOut;
		return false;
	}
}

function ckMail(s)
{
	var a = false;
	var res = false;
	if(typeof(RegExp) == 'function')
	{
		var b = new RegExp('abc');
		if(b.test('abc') == true){a = true;}
	}
	
	if(a == true)
	{
		reg = new RegExp('^([a-zA-Z0-9\\-\\.\\_]+)'+
	               '(\\@)([a-zA-Z0-9\\-\\.]+)'+
	               '(\\.)([a-zA-Z]{2,4})$');
		res = (reg.test(s));
	}
	else
	{
		res = (s.search('@') >= 1 &&
	     s.lastIndexOf('.') > s.search('@') &&
	     s.lastIndexOf('.') >= s.length-5)
	}
	return(res);
}


sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");

	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);