function clip(identifier,maximum_length,value_target) {
	var identifier,maximum_length;
	var actual = identifier.value.length;
	window.document.getElementById(value_target).style.color = "#00DD00";
	if (actual > 0.9 * maximum_length) {
	identifier.value = identifier.value.substring(0,maximum_length);
	window.document.getElementById(value_target).style.color  ="#DD0000";
	}
	if (actual > (maximum_length * 0.7) & actual < (maximum_length * 0.9)) {
		window.document.getElementById(value_target).style.color = "#AAAA00";
	}
	window.document.getElementById(value_target).innerHTML = actual;
}