var fieldstocheck = new Array();
fieldnames = new Array();

function checkform()
{
	for (i = 0; i < fieldstocheck.length; i++) {
		if (eval("document.subscribeform.elements['"+fieldstocheck[i]+"'].value") == "") {
			alert("Bitte angeben: "+fieldnames[i]);
			eval("document.subscribeform.elements['"+fieldstocheck[i]+"'].focus()");
			return false;
		}
	}
	return true;
}

function addFieldToCheck(value,name)
{
	fieldstocheck[fieldstocheck.length] = value;
	fieldnames[fieldnames.length] = name;
}