var nc = (document.layers) ? true:false
var ie =   (document.all) ? true:false
var n6 = (document.getElementById) ? true:false
 function mostrarArbol(id) 
 {
var disp,aux;

 if (ie)
  		{
	   aux = eval(document.all(id));
	   disp=aux.style.display;
	   document.all('collapseMenuBlock0Content').style.display= "none";
	   document.all('collapseMenuBlock1Content').style.display= "none";
	   document.all('collapseMenuBlock2Content').style.display= "none";
	   document.all('collapseMenuBlock3Content').style.display= "none";
	   document.all('collapseMenuBlock4Content').style.display= "none";
	   document.all('collapseMenuBlock5Content').style.display= "none";
	   document.all('collapseMenuBlock6Content').style.display= "none";
	   document.all('collapseMenuBlock7Content').style.display= "none";
	   if(disp == "block")
   			 document.all(id).style.display = "none";
 		else
 		   document.all(id).style.display = "block";
	   }
 	 	else if (nc)
  			{
		    aux = eval(document.layers(id));
		    disp=aux.style.display;
	   		document.layers('collapseMenuBlock0Content').style.display= "none";
	   		document.layers('collapseMenuBlock1Content').style.display= "none";
			document.layers('collapseMenuBlock2Content').style.display= "none";
		    document.layers('collapseMenuBlock3Content').style.display= "none";
		    document.layers('collapseMenuBlock4Content').style.display= "none";
	   		document.layers('collapseMenuBlock5Content').style.display= "none";
		   	document.layers('collapseMenuBlock6Content').style.display= "none";
		   	document.layers('collapseMenuBlock7Content').style.display= "none";
			if(disp == "block")
		    	document.layers(id).style.display = "none";
	  		else
	    		document.layers(id).style.display = "block";
	  		}
		  else if (n6)
  			{
			aux = eval(document.getElementById(id));
		    disp=aux.style.display;
			document.getElementById('collapseMenuBlock0Content').style.display= "none";
		   	document.getElementById('collapseMenuBlock1Content').style.display= "none";
	   		document.getElementById('collapseMenuBlock2Content').style.display= "none";
		   	document.getElementById('collapseMenuBlock3Content').style.display= "none";
	   		document.getElementById('collapseMenuBlock4Content').style.display= "none";
		   	document.getElementById('collapseMenuBlock5Content').style.display= "none";
		   	document.getElementById('collapseMenuBlock6Content').style.display= "none";
	   		document.getElementById('collapseMenuBlock7Content').style.display= "none";
	        if(disp == "block")
			   document.getElementById(id).style.display = "none";
	  	    else
    			document.getElementById(id).style.display = "block";
	   		} 
			else
			{
			aux = eval(document.getElementById(id));
		    disp=aux.style.display;
			document.getElementById('collapseMenuBlock0Content').style.display= "none";
		   	document.getElementById('collapseMenuBlock1Content').style.display= "none";
	   		document.getElementById('collapseMenuBlock2Content').style.display= "none";
		   	document.getElementById('collapseMenuBlock3Content').style.display= "none";
	   		document.getElementById('collapseMenuBlock4Content').style.display= "none";
		   	document.getElementById('collapseMenuBlock5Content').style.display= "none";
		   	document.getElementById('collapseMenuBlock6Content').style.display= "none";
	   		document.getElementById('collapseMenuBlock7Content').style.display= "none";
	       if(disp == "block")
			   document.getElementById(id).style.display = "none";
	  	   else
    			document.getElementById(id).style.display = "block";
			}
		
 }