if (document.images) {
	var blog = new Image(); blog.src = "img/nav/blog";
	var about = new Image(); about.src = "img/nav/about";
	var videos = new Image(); videos.src = "img/nav/videos";
	var music = new Image(); music.src = "img/nav/music";
	var contact = new Image(); contact.src = "img/nav/contact";
}
function nav_up(imgName) {
	if (document.images)
		document.images[imgName].src = eval(imgName + ".src") + ".gif";
}
function nav_over(imgName) {
	if (document.images)
		document.images[imgName].src = eval(imgName + ".src") + "_over.gif";
}
function polaroid_switch(imgName) {
	if (document.images)
		document.images['polaroid'].src = eval(imgName + ".src");
}