My javascript code fail in other version of browsers except Internet Explorer 10

My javascript code fail in other version of browsers except Internet
Explorer 10

I need some help where my javascript code fail in Chrome, Firefox, IE6-9
except IE10. Can someone spot any error on this piece of code? What is the
correct syntax to use in this code? See my code below :
<script type="text/javascript">
//Working in IE 10 but fail in other version including Firefox & Chrome
$(function Enabler(object) {
var lstWorksheet = document.getElementById('<%=
ddlWorkSheetList.ClientID %>');
var bPreview = document.getElementById('<%= ButtonPreviewFile.ClientID
%>');
var bImport = document.getElementById('<%= ButtonImportData.ClientID
%>');
if (lstWorksheet.selectedIndex != 0) {
bPreview.disabled = false;
bImport.disabled = false;
}
else {
bPreview.disabled = true;
bImport.disabled = true;
}
});
//Working in IE 10 but fail in other version including Firefox & Chrome
$(function GetFile(object) {
var bBrowseFile = document.getElementById('<%=
FileUploadExcel.ClientID %>');
var bGetWorksheet = document.getElementById('<%=
ButtonGetSheetName.ClientID %>');
var bResult = document.getElementById('<%= LabelUpload.ClientID %>');
$(bBrowseFile).change(function () {
if ($(this).val()) {
$(bGetWorksheet).attr('disabled', false);
bResult.style.color = "Green";
bResult.innerHTML = "<BR><B>Selected file is : </B>" +
bBrowseFile.value;
}
else {
$(bGetWorksheet).attr('disabled', true);
}
});
});
I attach this link to a full source code of my program here