function swap_big_pic(img) {
	
	if(document.getElementById("BigPic")) {
		
		src = img.src;
		if(src.search("_tmb") > 0) {
		newsrc = src.replace("_tmb","");
		} else {
			newsrc =src;
		}
		
		document.getElementById('BigPic').src = newsrc;
	}
	
	
}

function preloadall() {
	
	var i = 0;
	var picsarray = new Array();
	var basepath = "images/";
	
	while(document.images[i]) {
		
		var inpath = document.images[i].src;
			
		if(inpath.search(".gif") > 0) {
			var exto = "1.gif";
			var ext = "2.gif";
		} else if (inpath.search(".jpg") > 0) {
			var exto = "1.jpg";
			var ext = "2.jpg";
		} else if (inpath.search(".jpeg") > 0) {
			var exto = "1.jpeg";
			var ext = "2.jpeg";
		} 
		
		var newsrc = inpath.replace(exto,ext);
			
		picsarray[i] = new Image();
		picsarray[i].src = newsrc; 	
			
		i++;
	}
		
}

	function imageswap(what) {
		basepath = "../images/";
		var inpath = what.src;
				
		if(inpath.search("1.gif") > 0) {
			var exto = "1.gif";
			var ext = "2.gif";
		} else if (inpath.search("1.jpg") > 0) {
			var exto = "1.jpg";
			var ext = "2.jpg";
		} else if (inpath.search("1.jpeg") > 0) {
			var exto = "1.jpeg";
			var ext = "2.jpeg";
		} else if(inpath.search("3.gif") > 0) {
			var exto = "3.gif";
			var ext = "2.gif";
		} else if (inpath.search("3.jpg") > 0) {
			var exto = "3.jpg";
			var ext = "2.jpg";
		} else if (inpath.search("3.jpeg") > 0) {
			var exto = "3.jpeg";
			var ext = "2.jpeg";
		}
		var newsrc = inpath.replace(exto,ext);		
				
		what.src = newsrc;
	}
	
	function imageswapout(what, three) {
		
		basepath = "../images/";
		
		var inpath = what.src;
		
		if (inpath.search("2.gif") > 0) {
			var exto = "2.gif";
			if(three) {
				var ext = "3.gif";
			} else {
				var ext = "1.gif";
			}
		} else if (inpath.search("2.jpg") > 0) {
			var exto = "2.jpg";
				if(three) {
					var ext = "3.jpg";
				} else {
					var ext = "1.jpg";
				}
		} else if (inpath.search("2.jpeg") > 0) {
			var exto = "2.jpeg";
				if(three) {
					var ext = "3.jpeg";
				} else {
					var ext = "1.jpeg";
				}
		}
		
		var newsrc = inpath.replace(exto,ext);
		
		
		
		what.src = newsrc;
	}