//------------------------------------------------------------------------------
// Clear input text value
//
// param String fieldname : name of the field, e.g. document.form.inputfield
//
function clearValue(fieldname) {

	statement = fieldname + ".value" + "=''";
	eval(statement);
}

//------------------------------------------------------------------------------
// Initialise an input text value if the value is empty
//
// param String fieldname : name of the field, e.g. document.form.inputfield
// param String vValue    : value to initialise to
//
function initValue(fieldname, vValue) {
	
	vOldValue = "";
	statement1 = "vOldValue = " + fieldname + ".value";
	eval(statement1);
	
	if (vOldValue == "") {
		statement2 = fieldname + ".value" + "='" + vValue + "'";
		eval(statement2);
	}
}