//	open external links in a new window - replaces target="_blank"
	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"; 
		} 
	} 

//	preload images
	function preload_images () {
		arImageSrc = new Array ();
		arImageList = new Array ();
		for (counter in arImageSrc) {
			arImageList[counter] = new Image();
			arImageList[counter].src = arImageSrc[counter];
		}
	}


//	add given page to favourites (bookmark)
	function setBookmark ( url, str ) {
		if ( str == '' ) str = url;
		if ( document.all ) window.external.AddFavorite( url, str );
		else alert( 'Sorry, this function only works in Internet Explorer.\n\nPlease press CTRL and D to add a bookmark to \n"' + str + '".' );
	}

//	toggle a given elements visibility
	function toggle (el) {
				
		//	show the requested sub menu
		var menu_name = 'sub_' + el;
		if ( document.getElementById(menu_name) != undefined ) {
			if ( document.getElementById(menu_name).style.display == 'none' ) {
				document.getElementById(menu_name).style.display = '';
				document.getElementById(el).className = 'expanded';
			} else {
				document.getElementById(menu_name).style.display = 'none';
				document.getElementById(el).className = '';
			}
		}
	}

//	show a given element
	function show (el) {
		if ( document.getElementById(el) != undefined ) document.getElementById(el).style.display = '';
	}

//	activate the correct navigation
	function activate_nav() {
		var fullpath = location.pathname;
		var patharray = fullpath.split('/');
		var folderposition = patharray.length - 1;
		var filename = patharray[folderposition];
		var filearray = filename.split('.');
		var nav = filearray[0];
		
		switch ( nav ) {
		
			case 'index' :
			case '' :
				nav = 'home';
				break;
				
			case 'officers_products' :
				nav = 'officers';
				break;

			case 'leisure_products' :
				nav = 'leisure';
				break;

			case 'hotel_products' :
				nav = 'hotel';
				break;

			case 'aviation_products' :
				nav = 'aviation';
				break;


		}
				
		if ( nav == 'search' || nav == 'email' ) {
			nav = 'blank';
		}
		if ( document.getElementById('nav_' + nav) != undefined ) {
			document.getElementById('nav_' + nav).src = 'media/images/nav_' + nav + '_o.jpg';
		}
	}

//	show a given navigation
	function show_nav(nav) {
		if ( document.getElementById(nav) != undefined ) {
			document.getElementById(nav).src = 'media/images/' + nav + '_o.jpg';
		}
	}

//	restore the navigation depending on the current page
	function restore_nav(nav) {
		var fullpath = location.pathname;
		var patharray = fullpath.split('/');
		var folderposition = patharray.length - 1;
		var filename = patharray[folderposition];
		var filearray = filename.split('.');
		var current_page = filearray[0];
		if ( current_page == 'index' || current_page == '' ) {
			current_page = 'home';
		}
		if ( nav == 'search' || nav == 'email' ) {
			nav = 'blank';
		}
		if ( document.getElementById(nav) != undefined && nav != 'nav_' + current_page ) {
			document.getElementById(nav).src = 'media/images/' + nav + '.jpg';
		}
	}

//	when search field received focus
	function focus_search() {
		if ( document.getElementById('q').value == 'search...' ) {
			document.getElementById('q').value = '';
		}
	}
	
	function blur_search() {
		if ( document.getElementById('q').value == '' ) {
			document.getElementById('q').value = 'search...';
		}
	}

//	perform the following functions when the page loads
	window.onload = function(e) {
		externalLinks();
		activate_nav();
	}