var imagenSeleccionada="";

var anchoRecortar=0, alturaRecortar=0, nRecortar=0; 	  
	  var anchoAmpliar=0, alturaAmpliar=0, alturaAmpliar=0;
	  var id="investigacion";
	  var idsubir="cursos";
	  var subir=1;
	
      function iniciar(){
	     if(subir==0){
		    anchoRecortar=0;			
			alturaRecortar=0;			
			nRecortar=0;			
		    subir=1;		
		    recortar();			
		 }
		 else{		   			
			anchoAmpliar=0;
			alturaAmpliar=0;
			nAmpliar=0;			
		    subir=0;		 
		    ampliar();			
		 }		 
	  }
	  
      function recortar()
      {              	  		  
              nRecortar++;         			 
              anchoRecortar=(parseInt(document.getElementById(id).style.height))-(nRecortar*7)+25;
						  			  
		      alturaRecortar = (parseInt(document.getElementById(idsubir).style.top))-(7);
			  var menu = 0;
			  var amenu = (parseInt(document.getElementById("menu").style.height))-(7);
                                                  
              if(anchoRecortar>=26)
              {                            
                  document.getElementById(id).style.clip="rect(0,210,"+anchoRecortar+",0)";  
				  document.getElementById(idsubir).style.top = alturaRecortar;  
                  document.getElementById("menu").style.height = amenu;    
				  setTimeout("recortar()",25);                                   
              }			
      }
	  function inicio()
      {              	    
	          document.getElementById(idsubir).style.top = 70;  
			  document.getElementById(id).style.clip="rect(0,210,25,0)";	  		  
         	
      }
	  
     function ampliar()
     {                     
			  
              nAmpliar++; 
              anchoAmpliar=(parseInt(document.getElementById(id).style.height))+(nAmpliar*7)-46;			  
		      alturaAmpliar = (parseInt(document.getElementById(idsubir).style.top))+(7);
			  var menu = 0;
			  var amenu = (parseInt(document.getElementById("menu").style.height))+(7);
                                 
              if(anchoAmpliar<=90)
              {                            
                  document.getElementById(id).style.clip="rect(0,210,"+anchoAmpliar+",0)";  
				  document.getElementById(idsubir).style.top = alturaAmpliar;   
				  document.getElementById("menu").style.height = amenu;   
				  setTimeout("ampliar()",25);                                   
              }    
      }

function cargar(doc) {
document.getElementById("iframe").src = doc
// workaround for missing onLoad event in IFRAME for NN6
if (!document.getElementById("iframe").onload) {
transferHTML();
}
} 

function transferHTML() {
var srcFrame = document.getElementById("iframe")
var srcContent = (srcFrame.contentDocument) ?
srcFrame.contentDocument.getElementsByTagName("BODY")[0].innerHTML :
(srcFrame.contentWindow) ?
srcFrame.contentWindow.document.body.innerHTML : ""
document.getElementById("principal").innerHTML = srcContent
}
function cargarMenu(doc) {
document.getElementById("iframeMenu").src = doc
// workaround for missing onLoad event in IFRAME for NN6
if (!document.getElementById("iframeMenu").onload) {
transferHTMLMenu();
}
} 

function transferHTMLMenu() {
var srcFrame = document.getElementById("iframeMenu")
var srcContent = (srcFrame.contentDocument) ?
srcFrame.contentDocument.getElementsByTagName("BODY")[0].innerHTML :
(srcFrame.contentWindow) ?
srcFrame.contentWindow.document.body.innerHTML : ""
document.getElementById("capamenu").innerHTML = srcContent
}






function Ocultar(elemento)
{
   var id = document.getElementById(elemento);
   if(id.style.display == "none"){
      id.style.display = "block"
	  document.images["img"+elemento].src = "img/menos.gif";
   }else{
      id.style.display = "none";
	  document.images["img"+elemento].src = "img/mas.gif";
   }
  /*
  id = elemento + ".style.display"; 
  valor = eval(id+"=='none'");
 
 if(valor == false){
    eval(id+"='none'");       
    eval("document.images['img"+elemento+"'].src='img/mas.gif'");
   
  }else{ 
     eval(id+"='block'");         
     eval("document.images['img"+elemento+"'].src='img/menos.gif'");
  }  */
 }

function Ninguna(){
/* document.getElementById('mariposa').src = document.getElementById('mariposa').src.substring(0,document.getElementById('mariposa').src.length -5)+"0.gif";
   document.getElementById('oliva').src = document.getElementById('oliva').src.substring(0, document.getElementById('oliva').src.length -5)+"0.gif";
   document.getElementById('matraz').src = document.getElementById('matraz').src.substring(0,document.getElementById('matraz').src.length -5)+"0.gif";
   document.getElementById('quimico').src = document.getElementById('quimico').src.substring(0,document.getElementById('quimico').src.length -5)+"0.gif";
   document.getElementById('cisne').src = document.getElementById('cisne').src.substring(0,document.getElementById('cisne').src.length -5)+"0.gif";
   document.getElementById('cielo').src = document.getElementById('cielo').src.substring(0,document.getElementById('cielo').src.length -5)+"0.gif";
   if(imagenSeleccionada != "")
      document.getElementById(imagenSeleccionada).src = document.getElementById(imagenSeleccionada).src.substring(0,document.getElementById(imagenSeleccionada).src.length -5)+"1.gif";
  */ 
   
}


function Cambio(img){
  /* document.getElementById('mariposa').src = document.getElementById('mariposa').src.substring(0,document.getElementById('mariposa').src.length -5)+"0.gif";
   document.getElementById('oliva').src = document.getElementById('oliva').src.substring(0, document.getElementById('oliva').src.length -5)+"0.gif";
   document.getElementById('matraz').src = document.getElementById('matraz').src.substring(0,document.getElementById('matraz').src.length -5)+"0.gif";
   document.getElementById('quimico').src = document.getElementById('quimico').src.substring(0,document.getElementById('quimico').src.length -5)+"0.gif";
   document.getElementById('cisne').src = document.getElementById('cisne').src.substring(0,document.getElementById('cisne').src.length -5)+"0.gif";
   document.getElementById('cielo').src = document.getElementById('cielo').src.substring(0,document.getElementById('cielo').src.length -5)+"0.gif";
   document.getElementById(img).src = document.getElementById(img).src.substring(0,document.getElementById(img).src.length -5)+"1.gif";
   if(imagenSeleccionada != "")
      document.getElementById(imagenSeleccionada).src = document.getElementById(imagenSeleccionada).src.substring(0,document.getElementById(imagenSeleccionada).src.length -5)+"1.gif";
*/
   
}

function CambioFijo(img){
 /*  document.getElementById('mariposa').src = document.getElementById('mariposa').src.substring(0,document.getElementById('mariposa').src.length -5)+"0.gif";
   document.getElementById('oliva').src = document.getElementById('oliva').src.substring(0, document.getElementById('oliva').src.length -5)+"0.gif";
   document.getElementById('matraz').src = document.getElementById('matraz').src.substring(0,document.getElementById('matraz').src.length -5)+"0.gif";
   document.getElementById('quimico').src = document.getElementById('quimico').src.substring(0,document.getElementById('quimico').src.length -5)+"0.gif";
   document.getElementById('cisne').src = document.getElementById('cisne').src.substring(0,document.getElementById('cisne').src.length -5)+"0.gif";
   document.getElementById('cielo').src = document.getElementById('cielo').src.substring(0,document.getElementById('cielo').src.length -5)+"0.gif";
   document.getElementById(img).src = document.getElementById(img).src.substring(0,document.getElementById(img).src.length -5)+"1.gif";
   imagenSeleccionada = img;
*/
   
   
}