var visible = "xcel";

function sponsor(id) {

	if (visible) {
		
		var id1 = document.getElementById(visible);
	
		if (id1) {
		
			id1.style.display = "none";
		
		}
		 
	}
	
	var id1 = document.getElementById(id);
	
	if (id1) {
	
		id1.style.display = "block";
		visible = id;
	
	}

}