if (document.images){
	var image1 = new Image();
	var image2 = new Image();
	var image3 = new Image();
	var image4 = new Image();
	var image5 = new Image();	
	
	image1.src="images/navbar/home_alt.png";
	image2.src="images/navbar/about_alt.png";
	image3.src="images/navbar/calendar_alt.png";
	image4.src="images/navbar/media_alt.png";
	image5.src="images/navbar/contact_alt.png";
	
}

function switchOn(grab){
	var theSplit = grab.split('_');
	var isReal = theSplit[1];
	if(isReal != 'alt'){
		document[grab].src = 'images/navbar/'+grab+'_alt.png';
	}
}

function switchOff(grab){
	var theSplit = grab.split('_');
	var isReal = theSplit[1];
	if(isReal != 'alt'){
		document[grab].src = 'images/navbar/'+grab+'.png';
	}
}