function addFormClear(id, defaultText) {
	var el = document.getElementById(id);
	el.onfocus = function() { clearIf(el, defaultText); }
}

function clearIf(el, defaultText) {
	if (el.value == defaultText)
		el.value = '';
}

function initClearForm() {
	for (fname in clearDefaults)
		addFormClear(fname, clearDefaults[fname]);
}