You can use javascript to remap keys on an adhoc basis. I use this to disable the enter key in a form so it's not inadvertantly submitted - submit button must be used.

// disable the enter key so it no longer submits the form
function checkCR(evt) {
var evt = (evt) ? evt : ((event) ? event : null);
var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
if ((evt.keyCode == 13) && (node.type=="text")) {return false;}
}
document.onkeypress = checkCR; // attach the function to the onkeypress event


Steve