function downloadProduct( prodGuid ) {
  	var link = "#link_" + prodGuid;
  	$( link ).html( "Download Initiated" );
  
  	$.get( "includes/ajax/getdownloads.php", { action: "getdownload", guid: prodGuid }, function( data ) {
  		// no constants here. this is the only place. here are some return codes:
  		// -1: guid parameter is empty
  		// -2: no rows in result set
  		// -3: root directory not set in database
  		// -4: file doesn't exist.
  		// -5: mkdir failed
  		
  		var emsg = "";
  		
  		// all the errors here.
  		switch( data )
  		{
  			case "-1":
  				emsg = neucart_dp_param_missing;
  				break;
  			case "-2":
  				emsg = neucart_dp_no_file;
  				break;
  			case "-3":
  				emsg = neucart_dp_no_root_dir;
  				break;
  			case "-4":
  				emsg = neucart_dp_file_loc_missing;
  				break;
  			case "-5":
  				emsg = neucart_dp_failed_create_url;
			  	break;
  			case "0":
  				// go below
  				break;
  			default:
  				emsg = neucart_dp_general_error;
  				break;
  		}  		
  		
  		// no error?
  		if ( data == "0" ) {  		
  			// full path excluding id
	  		var path = 'downloadfile.php?guid='; 
	  		var url = path + prodGuid;
			window.location= url;
		} else {
			$( link ).html( emsg );
		}
  	});
  }