// Link esterni (devono avere l'attributo rel="external"):

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;

// Preload delle immagini:
// Example: preloadImages('file.gif', 'http://www.x.com/y.gif');

function preloadImages() {
	
  if(document.images) {
    if(!document.imageArray) document.imageArray = new Array();
    var i,j = document.imageArray.length, args = preloadImages.arguments;
    
    for(i=0; i<args.length; i++) {
			
      if (args[i].indexOf("#")!=0)
      {
        document.imageArray[j] = new Image;
        document.imageArray[j++].src = args[i];
      }
    }
  }
}

preloadImages('images/menu_hover.jpg');