function externalLinks() {
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	for (var i = 0; i < anchors.length; i++) {
		var anchor = anchors[i];
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") anchor.target = "_blank";
	}
}

function preload(img) {
	var a=new Image(); a.src = img; return a;
}

preload('theme/top.jpg');
preload('theme/bottom.jpg');
preload('theme/bullet_off.jpg');
preload('theme/bullet_on.jpg');
preload('theme/operator.jpg');
preload('theme/mmt.gif');
preload('theme/mmm1.gif');