homeOn = new Image; 
homeOn.src = "images/btn_home_on.png"; 
programOn = new Image; 
programOn.src = "images/btn_program_on.png"; 
competitionsOn = new Image; 
competitionsOn.src = "images/btn_competitions_on.png"; 
registrationOn = new Image; 
registrationOn.src = "images/btn_registration_on.png"; 
sponsorshipOn = new Image; 
sponsorshipOn.src = "images/btn_sponsorship_on.png"; 
informationOn = new Image; 
informationOn.src = "images/btn_information_on.png"; 

homeOff = new Image; 
homeOff.src = "images/btn_home_off.png"; 
programOff = new Image; 
programOff.src = "images/btn_program_off.png"; 
competitionsOff = new Image; 
competitionsOff.src = "images/btn_competitions_off.png"; 
registrationOff = new Image; 
registrationOff.src = "images/btn_registration_off.png"; 
sponsorshipOff = new Image; 
sponsorshipOff.src = "images/btn_sponsorship_off.png";
informationOff = new Image; 
informationOff.src = "images/btn_information_off.png";

function mouseOver(imgName)
{
	if (document.images)
	{
		imgOn = eval(imgName + "On.src");
		document[imgName].src = imgOn;
	}
}

function mouseOut(imgName)
{
	if (document.images)
	{
		imgOff = eval(imgName + "Off.src");
		document[imgName].src= imgOff;
	}
}

function swapimg(obj)
{
  var strsrc = obj.src;
  if (strsrc.indexOf("_off") != -1)
    {
	    var new_src = strsrc.split("_off")[0]+"_on.gif";
		obj.src = new_src;
    }
  else
	{
        var new_src = strsrc.split("_on")[0]+"_off.gif";
		obj.src = new_src;

	}

}