function clearText(thefield, defaultv) {
		if (defaultv == undefined) 		defaultv = thefield.defaultValue;
		if (defaultv == thefield.value)	thefield.value = "";
	}
	
	function insertText(thefield, defaultv) {
		if (defaultv == undefined) 		defaultv = thefield.defaultValue;
		if (thefield.value == "" )	thefield.value = defaultv;
	}