function leaveSearchBox(obj) {
    if (obj.value == '') {
        obj.className = 'blankSearch';
        obj.value = 'e.g. "Derby" or "DE1"';
    } else {obj.className = 'search';}
}

function accessSearchBox(obj) {
    if (obj.value == 'e.g. "Derby" or "DE1"') {
        obj.className = 'search';        
        obj.value = '';
    }
}