var locationHint = 'Stadt, Bundesland, Land, Postleitzahl';

function locationFocus(elem, focus_gained) {
    if (focus_gained) {
        if (elem.value != '' && elem.value == "Stadt, Bundesland, Land, Postleitzahl") {
            elem.value = "";
        }
    } else {
        if (elem.value == "") {
            elem.value = "Stadt, Bundesland, Land, Postleitzahl";
        }
    }
}