/*	Barra di Zoom */

	var _IMAGE_SERVER_ROOT = "/sitt/";

	function cj(gi){
		for(var i=17;i>=6;i=i-1){
			if(i>gi){
				var state='un';
			}else{
				var state='hi';
			};
			xb_get_element("zoom_"+i).src=_IMAGE_SERVER_ROOT+"images/zoom_"+state+".gif";
		};
	};

	function xb_get_element(id)
	{
	  var el = document.all ? document.all[id] : document.getElementById(id);
	  if (el)
	    return el;
	  else
	    return null;
	}

	function setZoomLevel(gi,state){
		var ke=0;
		if(state=='out'){
			var aa=omap.getZoom();
			state='hi';
			if(gi>aa)
				state='un';
		};
			
		xb_get_element("zoom_"+gi).src=_IMAGE_SERVER_ROOT+"images/zoom_"+state+".gif";			
		if(state=='click'){
			cj(gi);
			cw=true;
			omap.setZoom(gi);
			omapVE.SetZoomLevel(gi); 
		};
	};

	function zoomControl(ju){
		ea=false
		cw=true;
		var kp=omap.getZoom(),max_zoom=(ea)?15:17,min_zoom=6;
		if((ju=='in')&&(kp<max_zoom))
			omap.zoomIn();
		else if((ju=='out')&&(kp>=min_zoom))
			omap.zoomOut();
			//cj(kp);
		cj(omap.getZoom());
	};

	function refreshScala()	{	cj(omap.getZoom());	}
	
/*	---------- */