function swapContent(on, off1, off2, off3){
	
	
	document.getElementById(on).style.display="block";
	document.getElementById(off1).style.display="none";
	document.getElementById(off2).style.display="none";
	document.getElementById(off3).style.display="none";
	
		
}
function hideContent(off, on){
	document.getElementById(off).style.display="none";
	document.getElementById(on).style.display="block";

}
function turnOffHover(off){

	var offImgId = off + "Img";
	var offImgSrc = "images/"+ off + ".jpg";
	
	document.getElementById(offImgId).src = offImgSrc;

}