show alert in javascript and not continue

[ptvce]

hi i use this code:

<script type='text/javascript'>
function ValidateFileSize(strFUS) {
var filename = document.getElementById('<%=fuSignature.ClientID%>');

        var myFSO = new ActiveXObject("Scripting.FileSystemObject");

        var filepath = filename.value;

        var thefile = myFSO.getFile(filepath);

        var size = thefile.size;

        if (size / 1024 < 110)
            return true;
        alert('the size of file is big');
        return false;

    }

</script>

this code is work and show me the alert but when i click on ok button in allert box the file uploadbut i want it not be upload. what should i do? plz

[J4amieC]

you need to call this onSubmit of the form:

...

and the return in there is essential

[ptvce]

oooh , i forgot write return in önsubmit="return ValidateFileSize()" thanks so much. :)

[MKAdeel]

hi ptvc, you code is ok, you only need to return the function value where you call the function. for example you call it on a button click you would write

[ptvce]

yes, i forgot write return, Thanks