window.onerror=null;
	browserName = navigator.appName;
	browserVer = parseInt(navigator.appVersion);
	testbrowser = 0;

	if(browserName=="Netscape" || (browserName.indexOf('Explorer')>0 && browserVer > 3))
	{
		dir="/images/";
				
		bul_on  = new Image(); bul_on.src = ""+dir+"bola.gif";
		bul_off = new Image(); bul_off.src = ""+dir+"spacer.gif";

		testbrowser=1
	}


function active(imgName)
{ 

   if (testbrowser==1){      
	  document [imgName].src = bul_on.src;	
	}
}

function inactive(imgName)
{ 
   if (testbrowser==1){	         
         document [imgName].src = bul_off.src;
	}
}