var prefix = "banner";
	setBanner(prefix);
	function setBanner( prefix ){
		if( document.getElementById("banner1") ) document.getElementById("banner1").style.display = "none";
if( document.getElementById("banner2") ) document.getElementById("banner2").style.display = "none";
if( document.getElementById("banner3") ) document.getElementById("banner3").style.display = "none";	}