<!--
if (document.images) {
   var pum1 = new Image();
   pum1.src = "images/content/event.jpg";   
   var pum2 = new Image();
   pum2.src = "images/content/evento.jpg";
   
   var pum3 = new Image();
   pum3.src = "images/content/exhibition.jpg";   
   var pum4 = new Image();
   pum4.src = "images/content/exhibitiono.jpg";
   
   
   var pum5 = new Image();
   pum5.src = "images/content/conference.jpg";
   var pum6 = new Image();
   pum6.src = "images/content/conferenceo.jpg";
   
   
   var pum7 = new Image();
   pum7.src = "images/content/pa.jpg";
   var pum8 = new Image();
   pum8.src = "images/content/pao.jpg";
      
}

function show_rock() {
	if (document.images) {
		document["pum"].src = pum2.src;	
		}	
}
		
function hide_rock() {
	if (document.images) {
		document["pum"].src = pum1.src;
	}
}	
		
function show_rock1() {
	if (document.images) {
		document["pum1"].src = pum4.src;	
		}	
}
		
function hide_rock1() {
	if (document.images) {
		document["pum1"].src = pum3.src;
	}
}

function show_rock2() {
	if (document.images) {
		document["pum2"].src = pum6.src;	
		}	
}
		
function hide_rock2() {
	if (document.images) {
		document["pum2"].src = pum5.src;
	}
	}

function show_rock3() {
	if (document.images) {
		document["pum3"].src = pum8.src;	
		}	
}
		
function hide_rock3() {
	if (document.images) {
		document["pum3"].src = pum7.src;
	}
	
	
	}	
//-->