Tabletools doesn't work

I am trying to use tabletools plugin for the datatables I already have. I have included zeroclipboard.js and also the tabletools.min.js file in my jsp page. I have created a folder swf under WEB-INF and added the copy_cvs_xls_pdf.swf file in that directory. I am using

<c:url var="copy_csv_xls_pdf" context="${renderRequest.contextPath }" value= "/swf/copy_csv_xls_pdf.swf" />  

to get the path

I have included the path as

"oTableTools": {
   "sSwfPath": "<c:out value="${copy_csv_xls_pdf}" />"
} 

I don't get any errors when I look at firebug but still all the options are disabled except the print option. Any help would be greatly appreciated