function check_empty(name, min_length){
var check = false;

if (document.getElementsByName(name)[0].value.length>=min_length) {
    check = true
}

return (check);

}

function check_email(name) {


if (!document.getElementsByName(name)[0].value.match(/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,6}$/i)){
    //alert("not valid");
check=false;
} else {
   //alert("valid");
    check=true;
}
return (check);
}



function point_to(name) {

document.getElementsByName(name)[0].focus();
document.getElementsByName(name)[0].style.backgroundColor="#FFCC99";
return false;
}

function handle_error(number) {
var error_text = new Array (
"Hinweis: Keine Eingabe%FCberpr%FCfung im Browser mF6glich!",
"Bitte geben Sie eine gültige E-Mail-Adresse ein"

);
alert (unescape(error_text[number]));
switch(number) {
case 0: break;
case 1: point_to('el_email');break;
default: break; 
}
return false;
}


function check_form() {

if(!document.getElementsByName) {
handle_error(0);
return (true);
}
var chk = check_empty('el_email', 1);
var chk = check_email('el_email');
if (chk == false) { return (handle_error(1));}

if (chk == true) {return true;}
}