function topbanner ()
{
	 clearTimeout(h); 
	 topbanner1();
}

function topbanner1()
{
document.getElementById("topbanner").src ="images/topbanner1.gif";
var h=setTimeout('topbanner2()',24140);
}

function topbanner2()
{
document.getElementById("topbanner").src ="images/topbanner2.gif";
var h=setTimeout('topbanner3()',29540);
}

function topbanner3()
{
document.getElementById("topbanner").src ="images/topbanner3.gif";
var h=setTimeout('topbanner1()',6600);
}