/** txtClear clears a text field if the default "txtString" is what is there when the field is clicked **/
function txtClear(obj, txtString) {
	if (obj.value == txtString) { obj.value = ""; }
}

/** txtLeave sets the text field value to txtString if left blank **/
function txtLeave(obj, txtString) {
	if (obj.value == "") { obj.value = txtString; }
}