function AmpliarMiniaturas(idCapa1,idCapa2,idCapa3,idCapaShow) 
{   
	 if (idCapa1 > 0)
	 {
	     if (idCapa1 == idCapaShow)
         {
             document.getElementById(idCapa1).style.visibility = 'visible';
             document.getElementById(idCapa1).style.height = 214;
             document.getElementById('IMG' + idCapa1).height = 214;
         } 
		 else
		 {
		     document.getElementById(idCapa1).style.visibility = 'hidden';
                 document.getElementById(idCapa1).style.height = 1;
                 document.getElementById('IMG' + idCapa1).height = 1;
		 }
     }
	 if (idCapa2 > 0)
	 {
	     if (idCapa2 == idCapaShow)
         {
             document.getElementById(idCapa2).style.visibility = 'visible';
             document.getElementById(idCapa2).style.height = 214;
             document.getElementById('IMG' + idCapa2).height = 214;
             if(navigator.appName == 'Microsoft Internet Explorer' && parseFloat(navigator.appVersion) == 4)
             {
                 document.getElementById(idCapa2).style.top = -8 + 'px';
             }
             else
             {  
                 document.getElementById(idCapa2).style.top = -221 + 'px';
             }
         } 
		 else
		 {
		     document.getElementById(idCapa2).style.visibility = 'hidden';
                 document.getElementById(idCapa2).style.height = 1;
                 document.getElementById('IMG' + idCapa2).height = 1;
		 }
     }
	 if (idCapa3 > 0)
	 {
	     if (idCapa3 == idCapaShow)
         {
             document.getElementById(idCapa3).style.visibility = 'visible';
             document.getElementById(idCapa3).style.height = 214;
             document.getElementById('IMG' + idCapa3).height = 214;
             if(navigator.appName == 'Microsoft Internet Explorer' && parseFloat(navigator.appVersion) == 4)
             {
                 document.getElementById(idCapa3).style.top = -16 + 'px';
             }
             else
             {  
                 document.getElementById(idCapa3).style.top = -229 + 'px';
             }
         } 
		 else
		 {
		     document.getElementById(idCapa3).style.visibility = 'hidden';
                 document.getElementById(idCapa3).style.height = 1;
                 document.getElementById('IMG' + idCapa3).height = 1;
		 }
     }	 
 }