jQuery.preloadImages = function()
{
  for(var i = 0; i<arguments.length; i++)
  {
    jQuery("<img>").attr("src", arguments[i]);
  }
};
$.preloadImages("/images/nav_capabilities_on.jpg", "/images/nav_project_types_on.jpg","/images/nav_profiles_on.jpg","/images/nav_contact_on.jpg","/images/nav_news_on.jpg");

$(document).ready(function() { 
	externalLinks();
$('#nav_capabilities').hover(function() {
	$(this).attr("src","/images/nav_capabilities_on.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_on","_off"); }
	$('#active').attr("src",activeSrc);
		}, function() {
	$(this).attr("src","/images/nav_capabilities_off.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_off","_on");}
	$('#active').attr("src",activeSrc);
});
$('#nav_project_types').hover(function() {
	$(this).attr("src","/images/nav_project_types_on.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_on","_off"); }
	$('#active').attr("src",activeSrc);
		}, function() {
	$(this).attr("src","/images/nav_project_types_off.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_off","_on");}
	$('#active').attr("src",activeSrc);
});
$('#nav_profiles').hover(function() {
	$(this).attr("src","/images/nav_profiles_on.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_on","_off"); }
	$('#active').attr("src",activeSrc);
		}, function() {
	$(this).attr("src","/images/nav_profiles_off.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_off","_on");}
	$('#active').attr("src",activeSrc);
});
$('#nav_contact').hover(function() {
	$(this).attr("src","/images/nav_contact_on.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_on","_off"); }
	$('#active').attr("src",activeSrc);
		}, function() {
	$(this).attr("src","/images/nav_contact_off.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_off","_on");}
	$('#active').attr("src",activeSrc);
});
$('#nav_news').hover(function() {
	$(this).attr("src","/images/nav_news_on.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_on","_off"); }
	$('#active').attr("src",activeSrc);
		}, function() {
	$(this).attr("src","/images/nav_news_off.jpg");
	activeSrc = $('#active').attr("src");
	if(activeSrc != null) {activeSrc = activeSrc.replace("_off","_on");}
	$('#active').attr("src",activeSrc);
});
});

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";
 }
}