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";
	}
}
window.onload = externalLinks;

$(document).ready(function () {
	$(".caravanbutton").hover(
   	function ()
		{
			$(this).css("opacity","0.5");
			$(this).css("filter", "alpha(opacity = 50)");
		},
	function ()
		{
			$(this).css("opacity","1");
			$(this).css("filter", "alpha(opacity = 100)");
		}
	);					
});