How can I attach multiple documents in javascript mailto?

We need to link multiple documents by mail using JavaScript or j-request.

We need to attach our path to the document, there must be a live URI. For example: http://www.axmag.com/download/pdfurl-guide.pdf

My code is like HTML:

<a onclick="sendmaildocument();">Mail</a>

      

        
        
        
      

    

JavaScript:

function sendmaildocument()
{   
   document.location = "mailto:user@example.com?attach="+"http://www.axmag.com/download/pdfurl-guide.pdf";
} 

      

        
        
        
      

    

Please help me..!