/* switches input-value between a defined text and no text
 * bool inputSwap(string,string)
 */
function inputSwap(id,defInput) {
	var el = document.getElementById(id);
	if(el.value == defInput) { el.value = ''; return false; }
	if(el.value == '') { el.value = defInput; return false; }
	return false;
}