var old_val = new Array();
function selectFieldValue(node) {
	setzeOldValue(node)
	node.select();	
}

function selectFieldValueCheck(node) {
	setzeOldValue(node)
	if (node.value == "") {
		node.value = old_val[node.name];	
	}
}

function setzeOldValue(node) {
	if (typeof(old_val[node.name]) == 'undefined') {
		old_val[node.name] = node.value;	
	}
}

function getOldVal(name) {
	if (old_val[name] != undefined) {
		return old_val[name];
	} else {
		var ref = document.forms[0];
		return ref[name].value;
	}
}