// ==UserScript==
// @name          inyectar css 
// @namespace     http://pedro.delgallego.com/
// @description      Este script mete imagenes dentro de barapunto.
// @include       file:///home/pedro/programacion/javascript/*
// @include       http://barrapunto.com/journal.pl*
// ==/UserScript==

function modifyLink(refLink,address){       
	 refLink.setAttribute("rel","stylesheet")
	 refLink.setAttribute("type","text/css")
	 refLink.setAttribute("href",address)
	 refLink.setAttribute("media","all")
	 refLink.setAttribute("rel","stylesheet")
}


// Buscar el enlace y trer los datos
var allCss, thisCss, direccion;
allElements = document.evaluate('//*[@href]', document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
   for (var i = 0; i < allElements.snapshotLength; i++) {
    thisElement = allElements.snapshotItem(i);    
   switch (thisElement.nodeName.toUpperCase()) {	
        case 'A':              	      
	    if (thisElement.protocol=="css:"){		    
		     // crear direccion solo cambio el protocolo		
		     var direccion		
              	     direccion= ""+thisElement.href.replace("css:","")		  	
              }		
              break;        
        default:
            // do something with other kinds of HTML elements
    }
   }
    
var allElements, thisElement;
allElements = document.evaluate(  '//*[@rel="top"]',    document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,  null); 
thisElement = allElements.snapshotItem(0);    		    
modifyLink(thisElement,direccion)