formChanged=false;

function exitClick() {
	if(formChanged) {
		if(confirm("You've made changes. Exit without saving ?")) return true;
		else return false;
	} else return true;
}

function fieldChange() {
	document.getElementById("exitButton1").value="Exit without save";
	document.getElementById("exitButton2").value="Exit without save";
	formChanged=true;
}