Very cool and a great springboard for others to develop from.
Bug/feature: only uppercase works in formulas (A4 works but a4 does not).
Bug/feature: only uppercase works in formulas (A4 works but a4 does not).
elm.onkeydown = function(evt) {
evt = evt || window.event;
var keyCode = evt.keyCode || evt.which;
if (keyCode == '13') {
var nextid = this.id.charAt(0) + String.fromCharCode(this.id.charCodeAt(1)+1);
document.getElementById(nextid).focus();
}
};