I may have cross-posted this... :-(

I'm a VB programmer getting *way* to deep into this wonderful new JS
venture. I looked around for a function like VBs' IsNumeric without much
success. I had to roll my own. Does anyone see any bugs in this?

function IsNumeric(expre ssion) {

var nums = "0123456789 ";

if (expression.len gth==0)return(f alse);

for (var n=0; n <...