function changeLangPath(lang){
	pathArray = window.location.pathname.split( '/' );

	newPathname = "";
	for ( i = 1; i < pathArray.length; i++ ) {
		if(lang == 'eng'){
			if(pathArray[i] == 'chi'){
				continue;
			}else{
				newPathname += "/";
				newPathname += pathArray[i];
			}
		}else{
			if(i == pathArray.length-2 ){
				newPathname += "/";
				newPathname += pathArray[i]+"/chi";
			}else{
				newPathname += "/chi/";
				//newPathname += pathArray[i];
				newPathname += pathArray[i];
				
			}
		}
	};
	
	//alert(newPathname);
	window.location = newPathname;
}

function preloadImages(){
	var images = [];
	var args = preloadImages.arguments;
	for (i = 0; i < args.length; i++) {
		images[i] = new Image();
		images[i].src = args[i];
	}
}

//fadeIn and slideIn
function toggle_content(div_id, obj){
	var target = jQuery(div_id);
	target.animate({
		"height": "toggle", 
		"opacity": "toggle"
		}, { duration: "slow" });
	
	if (target.css('opacity') == 0)
		obj.innerHTML = "< Hide detail";
	else
		obj.innerHTML = "> Please click for detail";
}

window.onload = function(){
	// Preload the menu images
	preloadImages('img/nav/nav_on.jpg');
};