function showpopup(filename) {
theWindow = window.open("/popup.php?item="+filename,"Info","directories=no,menubar=no,scrollbars=yes,status=no,toolbar=no,resizable=yes,width=580,height=250");
if (window.focus) {theWindow.focus();}
}

function ClearFieldFocus(f,dt) {
if (f.value==dt) f.value='';
}
function ClearFieldBlur(f,dt) {
if (f.value=='') f.value=dt;
}