function showBanners(){
	var elements=new Array();

	if(document.getElementById("allbanners") != null)
		{
			var parent=document.getElementById("allbanners");
			var i,n,element;
			for(i=parent.childNodes.length-1;i>=0;i--){
				if(parent.childNodes[i].tagName.toLowerCase()=="div"){
					element=parent.childNodes[i];
					elements.push(element);
					parent.removeChild(element);
				}
			}
			for(i=0;i<3 && elements.length>0;i++){
				n=parseInt(Math.random()*elements.length);
				element=elements[n];
				parent.appendChild(element);
				elements.splice(n,1);
			}
		}
}