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

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

function findObj(n, d) {
  	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=findObj(n,d.layers[i].document); 
  	return x;
}

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

function sacar(x)
{
		 if(document.all){eval("document.all.capa" + x + ".style.visibility = 'visible';");}
		 if(document.layers){eval("document['capa" + x + "'].visibility = 'visible';");}
}

function quitar()
{
	for(x=1;x<9;x++)
		{
		 if(document.all){eval("document.all.capa" + x + ".style.visibility = 'hidden';");}
		 if(document.layers){eval("document['capa" + x + "'].visibility = 'hidden';");}
		}
}