//FUNCION PARA AUMENTAR EL TAMAÑO DE LETRA
var tamanyoBody = 0.7;
function fijarTamanyo(tamanyo) {
  setCookie( "tamanyoLetra", tamanyo, 100, "/" );
  tamanyoTexto=tamanyo+'em';
  document.body.style.fontSize=tamanyoTexto;
}
function aumentarTamanyo() {
  var tamanyo=getCookie("tamanyoLetra");
  if (tamanyo==null)
	tamanyo=tamanyoBody+0.1;
  else if (tamanyo<1.4)
	tamanyo=eval(tamanyo)+0.1;
  fijarTamanyo(tamanyo);
}
function disminuirTamanyo() {
//deleteCookie("tamanyoLetra", "/");
  var tamanyo=getCookie("tamanyoLetra");
  if (tamanyo==null)
	tamanyo=tamanyoBody-0.1;
  else if (tamanyo>0.4)
	tamanyo=eval(tamanyo)-0.1;
  fijarTamanyo(tamanyo);
}
function iniciarTamanyo() {
  var tamanyo=getCookie("tamanyoLetra");
  if (tamanyo==null)
	tamanyo=tamanyoBody;
  fijarTamanyo(tamanyo);
}
function reestablecerTamanyo() {
  var tamanyo=tamanyoBody;
  fijarTamanyo(tamanyo);
}

//FUNCIONES COMUNES
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function capturaIntro(){
	return false;
}

function checkKey(){
		if(self.event.keyCode == 13){
			validarBusqueda();
		}
	}
	
function validarBusqueda(){
	var clave = document.getElementById('clave').value;

	if(clave == ''){
		alert('Por favor introduzca una clave de busqueda.')
	}
	else{
		document.getElementById('Formulario').submit()
	}

}	

function abrir(htmlfile, wndWidth, wndHeight) {
  	var popWnd; //Objeto ventana de popup
    var maxWidth = screen.width-10;
    var maxHeight = screen.height-56;

    //Preprocesado de parámetros
    if (wndHeight==0) wndHeight = maxHeight;
    if (wndWidth==0) wndWidth = maxWidth;

    //Calculo de la posición para centrar la ventana
    var posX = maxWidth/2 - wndWidth/2;
    var posY = maxHeight/2 - wndHeight/2;

    if (popWnd) popWnd.close();
    popWnd = open(htmlfile, 'popWnd', 'resizable=0,toolbar=0,scrollbars=1,location=0,directories=0,status=0,menubar=0,width='+wndWidth+',height='+wndHeight+',screenX=0,screenY=0,left='+posX+',top='+posY);

    //this.blur();
    popWnd.focus();
  }