function checkField(theField, defaultValue) {
	if (theField.value == '') {
		theField.value = defaultValue;
	} else if (theField.value == defaultValue) {
		theField.value = '';
	}
}

function removeApostrophe(obj)
{
	var tmp = obj.value;
	if (tmp.match("'")) {
		var ne = tmp.replace("'","");
		obj.value = ne;
	}
}