/*
	Description: function that swaps images on mouse over and mouse off
	Input: image name, on or off
*/
function swapImages(image, dir)
{
	var id = image + "_img";
	
	if(dir == "in")
	{
		var newImage = image + "_h";
		
		document.getElementById(id).src = "images/" + newImage + ".png";
	}
	else if(dir == "out")
	{
		document.getElementById(id).src = "images/" + image + ".png";
	}
}