function popup(mypage, myname, w, h, scroll) {
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;

	win = window.open(mypage, myname, 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable=no,status=no')
	win.window.focus();
}

function fieldLabel(tmp_obj, tmp_label) {
	tmp_obj.value = tmp_label;
	tmp_obj.dValue = tmp_label;
	
	Event.add(tmp_obj, Event.FOCUS, fieldFocus);
	Event.add(tmp_obj, Event.BLUR, fieldBlur);
}

function fieldFocus(e) {
	e = e || event;
	
	fieldClear(e.target);
}

function fieldBlur(e) {
	e = e || event;
	
	fieldReset(e.target);
}

function fieldClear(tmp_obj) {
	if (tmp_obj.value == tmp_obj.dValue) {
		tmp_obj.value = '';
	}
}

function fieldReset(tmp_obj) {
	if (tmp_obj.value == '') {
		tmp_obj.value = tmp_obj.dValue;
	}
}