text: /**
   * Although DataTables' internal numeric sorting works no problem on negative
   * numbers, it does not accept positively signed numbers. This plug-in will
   * sort just such data numerically.
   *
   *	@name Fully signed numbers sorting 
   *	@summary Sort data numerically with a leading `+` symbol (as well as `-`).
   *	@author [Allan Jardine](http://sprymedia.co.uk)
   *
   *	@example
   *	$('#example').dataTable( {
   *		 columnDefs: [
   *		 { type: 'signed-num', targets: 0 }
   *		 ]
   *	} );
   */
  
  jQuery.extend( jQuery.fn.dataTableExt.oSort, {
  	"signed-num-pre": function ( a ) {
  		return (a=="-" || a==="") ? 0 : a.replace('+','')*1;
  	},
  
  	"signed-num-asc": function ( a, b ) {
  		return ((a < b) ? -1 : ((a > b) ? 1 : 0));
  	},
  
  	"signed-num-desc": function ( a, b ) {
  		return ((a < b) ? 1 : ((a > b) ? -1 : 0));
  	}
  } );
  