function showLarge() {
	var largeImage = document.getElementById("pic3");
	this.originalLargeImage = largeImage.src;
	largeImage.src = this.src.replace(/small/, "large");	
}

function hideLarge() {
	var largeImage = document.getElementById("pic3");	
	largeImage.src = this.originalLargeImage;
}

window.onload = function() {
	document.getElementById("pic1").onmouseover = showLarge;
	document.getElementById("pic2").onmouseover = showLarge;
	
	document.getElementById("pic1").onmouseout = hideLarge;
	document.getElementById("pic2").onmouseout = hideLarge;
	
	if (form = document.getElementById('campsearch')) {		
		document.getElementById('campsearchSubmit').style.display = 'none';
		for (var i=0; i<form.elements.length; i++) {
			form.elements[i].onchange = function() {
				form.submit();
			};
		}
	}
}