Hi i just put up a validation function in jScript to validate filename in fileupload control[input type file]. The function seems to work fine in FF and sometimes in ie but never in Chrome. Basically the function tests if File name is atleast 1 char upto 25 characters long.Contains only valid characters,numbers [no spaces] and are of file types in the list. Could you throw some light on this

function validate(Uploadelem) {
    var objRgx = new RegExp(/^[\w]{1,25}\.*\.(jpg|gif|png|jpeg|doc|docx|pdf|txt|rtf)$/);
    objRgx.ignoreCase = true;
    if (objRgx.test(Uploadelem.value)) {
        document.getElementById('moreUploadsLink').style.display = 'block';
    } else {
        document.getElementById('moreUploadsLink').style.display = 'none';
    }
}