function acute(letra)

{  switch(letra)

   {  case "a":return(String.fromCharCode(225));break;

      case "e":return(String.fromCharCode(233));break;

      case "i":return(String.fromCharCode(237));break;

      case "o":return(String.fromCharCode(243));break;

      case "u":return(String.fromCharCode(250));break;

      case "A":return(String.fromCharCode(193));break;

      case "E":return(String.fromCharCode(201));break;

      case "I":return(String.fromCharCode(205));break;

      case "O":return(String.fromCharCode(211));break;

      case "U":return(String.fromCharCode(218));break;



	  default:return("");

   }

}



function tilde(letra)

{  switch(letra)

   {  case "n":return(String.fromCharCode(241));break;

      case "N":return(String.fromCharCode(209));break;



	  default:return("");

   }

}



function amp()

{  return(String.fromCharCode(38));

}

//------------------------------------------------------------------------------

function youtubeVideoView(id,width,height,lang)
{  var hl="es";
   switch(lang)
   {  case "es":hl="es";break;
      case "en":hl="en";break;
   }

   var video="<object width=\""+width+"\" height=\""+height+"\">";
   video=video+"<param name=\"movie\" value=\"http://www.youtube.com/v/"+id+"&hl="+hl+"&fs=1\"></param>";
   video=video+"<param name=\"allowFullScreen\" value=\"true\"></param>";
   video=video+"<param name=\"allowscriptaccess\" value=\"always\"></param>";
   video=video+"<embed src=\"http://www.youtube.com/v/"+id+"&hl="+hl+"&fs=1\" type=\"application/x-shockwave-flash\" allowscriptaccess=\"always\" allowfullscreen=\"true\" width=\""+width+"\" height=\""+height+"\"></embed>";
   video=video+"</object>";

   document.write(video);
}

//------------------------------------------------------------------------------

function strReplace(cadenaBuscada,cadenaReemplazo,cadena)
{  var expresion=eval("/"+cadenaBuscada+"/gi");

   return(cadena.replace(expresion,cadenaReemplazo));
}

//------------------------------------------------------------------------------

function friendlyURL(url)
{  url=url.toLowerCase(); //Pasar a minusculas

   url=strReplace(String.fromCharCode(225),"a",url); //Caracteres especiales latinos
   url=strReplace(String.fromCharCode(233),"e",url);
   url=strReplace(String.fromCharCode(237),"i",url);
   url=strReplace(String.fromCharCode(243),"o",url);
   url=strReplace(String.fromCharCode(250),"u",url);
   url=strReplace(String.fromCharCode(241),"n",url);

   url=strReplace(" ",   "-",url); //Conversion
   url=strReplace("&",   "-",url);
   url=strReplace("\\r\\n","-",url);
   url=strReplace("\\n",  "-",url);
   //url=strReplace("+",   "-",url);

   url=url.replace(/[^a-z0-9\-<>]/,"");  //Caracteres especiales
   url=url.replace(/[\-]+/,        "-");
   url=url.replace(/<[^>]*>/,      "");

   return(url);
}



//------------------------------------------------------------------------------



function cambiaFila(fila,sw)

{  //si sw=1: el mouse esta en la fila

   //si sw=0: el mouse salio de la fila



   var celdas=null;



   celdas=fila.getElementsByTagName('td');



   for(var i=0;i<=celdas.length-1;i++)

   {  switch(sw)

	  {  case 1:celdas[i].style.background="#CCFFCC";  // VERDE

	            celdas[i].style.cursor="pointer";

	            break;

	     case 0:celdas[i].style.background="#E8EAEA";

		        break;

	  }

   }

}



//------------------------------------------------------------------------------



function openWindow(pageWeb,name,opcion)

{  var miVentana;



   switch(opcion)

   {  case "max":  miVentana=window.open(pageWeb,name,"width="+(screen.width-10)+",height="+(screen.height-75)+",resizable=no,toolbar=no,menubar=no,scrollbars=yes,status=yes,location=no,left=0,top=0");break;

      case "small":var w=550;

	               var h=325;

                   miVentana=window.open(pageWeb,name,"width="+w+",height="+h+",resizable=no,toolbar=no,menubar=no,scrollbars=no,status=yes,location=no,left="+((screen.width/2)-(w/2))+",top="+((screen.height/2)-(h/2)));break;



	  default:miVentana=window.open(pageWeb,name);break;

   }

}



//------------------------------------------------------------------------------



function createXMLHttpRequest()

{  /*

   Obtener la instancia del objeto XMLHttpRequest



   Crea el objeto AJAX. Esta funcion es generica para cualquier utilidad de

   este tipo, por lo que se puede copiar tal como esta aqui

   */



   var xmlhttp=false;



   try

   {  //Creacion del objeto AJAX para navegadores no IE

      xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");

   }

   catch(e)

   {  try

      {  //Creacion del objeto AJAX para IE

         xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");

      }

      catch(E)

	  {  xmlhttp=false;

	  }

   }



   if(!xmlhttp && typeof XMLHttpRequest!="undefined")

   {  //Creacion del objeto AJAX para Mozilla, Safari, ...

      xmlhttp=new XMLHttpRequest();

   }



   return(xmlhttp);

}



function addEvent(elemento,nombreEvento,funcion,captura)

{  if(elemento.attachEvent)

   {  elemento.attachEvent("on"+nombreEvento,funcion);

      return true;

   }

   else

   {  if(elemento.addEventListener)

      {  elemento.addEventListener(nombreEvento,funcion,captura);

         return true;

      }

      else

      {  return false;

	  }

   }

}