document.onkeydown = handleKey;
function handleKey(e)  {
	if (document.all) { // only for IE
		var objType = new String();
		asc = event.keyCode;
		if (asc == 13) {
			objType = event.srcElement.type.toLowerCase();
			if ((objType != 'button') && (objType != 'submit')) {
				event.keyCode = 9;
			}
		}
	}
	return true;
}