var KEY_ENTER = 13;
var KEY_DELETE = 46;

function checkKey(e, key) {
	var rightkey = true;
	
	try {
		if (window.event.keyCode == key) rightkey = false;
	}
	catch(x) {}

	try {
		if (e.which == key) rightkey = false;
	}
	catch(x) {}
	
	return rightkey;
}