var balloons = new Array("feature", "disclosure", "risks", "liquidity"); 
function hideAllAndShow(balloon){
	hideAllBalloons();
	showBalloon(balloon);
}
function showBalloon(balloon){
	var obj = document.getElementById(balloon);
	obj.style.display = 'block';
	var sel_img = balloon+"_img";
    var new_img = balloon+"_hover.gif";

	document.getElementById(sel_img).src="images/"+new_img;
}
function hideBalloon(balloon){
	var obj = document.getElementById(balloon);
	obj.style.display = 'none';
}
function hideAllBalloons(){
	for(i=0; i < balloons.length; i++){
		hideBalloon(balloons[i]);

	    var sel_img = balloons[i] + "_img";
	    var new_img = balloons[i] + ".gif"; 
	            
	    //alert(sel_img.src);
		document.getElementById(sel_img).src ="/images/"+new_img;
	}
}