function check_form(form){

	if (!form.req_username.value) {
		alert("No Username found");
		return false;
	}
	
	if (form.req_username.value.length < 3) {
		alert("You habe to enter at least 3 signs in Your Username ")
	}
	
	if (!form.req_password1.value) {
		alert("No password found");
		return false;
	}
	
	if (!form.req_password2.value) {
		alert("No confirm pass found");
		return false;
	}
	
	if (form.req_password1.value != form.req_password2.value) {
		alert("Passwords are not equal!");
		return false;	
	}
	
	if (!form.req_email.value) {
		alert("E-mail not found!");
		return false;	
	}

	var mail = /^[^@]+@+([A-Za-z0-9\-]*\w)+(\.[A-Za-z0-9]*\w)+$/;
	var check = form.req_email.value.match(mail);
	if (check == null) {
		alert("Wrong e-mail");
		return false;
	}
	return true;
}