function getScrollY() {
		  var scrOfX = 0, scrOfY = 0;
		  if( typeof( window.pageYOffset ) == 'number' ) {
		    //Netscape compliant
		    scrOfY = window.pageYOffset;
		    scrOfX = window.pageXOffset;
		  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
		    //DOM compliant
		    scrOfY = document.body.scrollTop;
		    scrOfX = document.body.scrollLeft;
		  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
		    //IE6 standards compliant mode
		    scrOfY = document.documentElement.scrollTop;
		    scrOfX = document.documentElement.scrollLeft;
		  }
		  //return [ scrOfX, scrOfY ];
		  return scrOfY;
		}


		function showCoords(evt,id,img){
		  if (id<10000) id = "0"+id;
		  document.getElementById("provaIMG").src = img;
		 document.getElementById("code").innerHTML = id;
		 document.getElementById("prova").style.visibility = "visible";
		  
		 if(navigator.appName.indexOf("Netscape")>-1) { 
			document.getElementById("prova").style.top = evt.layerY+"px";
			document.getElementById("prova").style.left = evt.layerX+"px";
		 } 
		 else
		 {
			document.getElementById("prova").style.top = (getScrollY()+evt.clientY)+"px";
			document.getElementById("prova").style.left = evt.clientX+"px";
		 }
		 
		 }
		 function hideDiv()
		 {
		 document.getElementById("prova").style.visibility = "hidden";
		 document.getElementById("provaIMG").src = "loader_foto.gif";
		 }