function validEmail(email) {
	var strReg = "^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$";
	var regex = new RegExp(strReg);
	return(regex.test(email));
	}
function radioWert(rObj) {
    for (var i=0; i<rObj.length; i++) if (rObj[i].checked) return rObj[i].value;
    return false;
}
function selectWert(sObj) {
	with (sObj) return options[selectedIndex].value;
}

function loadjQuery(){
	if (typeof jQuery == 'undefined') {
	    var script = document.createElement('script');
	    script.type = "text/javascript";
	    script.src = "http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js";
	    document.getElementsByTagName('head')[0].appendChild(script);
	}
}