function $id(id){return(document.getElementById(id)?document.getElementById(id):false)}
function isDom(){return (document.getElementById&&document.getElementsByTagName)?true:false}

function addLoadEvent(f){var o=window.onload;if(typeof window.onload!='function'){window.onload=f}else{window.onload=function(){o();f()}}}


var nextBanNo = 1;

function setup() {
		
		var banns = $id('rotator').getElementsByTagName('a');
		if (banns) {		
			for(var i=0; i<banns.length; i++){		
				if(i==0){}
				else {banns[i].style.display = "none";}
				//banns[i].style.position = "absolute";
			}
			t=window.setTimeout("rotate()", 4000);
		}
}

function rotate() {
		var banns = $id('rotator').getElementsByTagName('a');
		if (banns) {
			for(var i=0; i<banns.length; i++){		
			if(i==nextBanNo){banns[i].style.display = "block";}
			else {banns[i].style.display = "none";}
			}
			nextBanNo +=1;
			if (nextBanNo > (banns.length-1)) {nextBanNo=0;}
			t=window.setTimeout("rotate()", 4000);
		}
}

if (isDom()){
	addLoadEvent(setup);		
	
}