function checkEmail(t){ 
	t.value = t.value.toLowerCase().replace(/^\s+|\s+$/g,"");
	document.stardekk.naam.value = document.stardekk.naam.value.replace(/^\s+|\s+$/g,"");
	var re = /^(\w+|\w+((\.|-+)\w+)+)@(\w+|\w+(-+\w+)+)(\.(\w+|\w+(-+\w+)+))+$/g;
	if (re.exec(t.value)){
		if(document.stardekk.naam.value == "") {
			document.stardekk.naam.focus();
			alert("Name please !!");
			return false;
		}
		if(document.stardekk.telefoon.value == "") {
			document.stardekk.telefoon.focus();
			alert("telephone please !!");
			return false;
		}
		if(document.stardekk.stad.value == "") {
			document.stardekk.stad.focus();
			alert("City Please !!");
			return false;
		}
		if(document.stardekk.straat.value == "") {
			document.stardekk.straat.focus();
			alert("Street Please !!");
			return false;
		}
	}
	else {
		alert(" Email please !!");
		t.focus();
	 	return false;
	}
}