/****************************************
	Spezifisches Bild einer spezifischen
	Galerie darstellen
****************************************/
function displayEasyGalleryImage(gallery_id,new_image_no){
	
	var current_image_no = window.easygallery_current_images[gallery_id];
	var total_images = eval("window.easygallery_"+String(gallery_id)+"_total_images");
	
	
	// Hauptbild und Legende etc. austauschen
	var infos = eval("window.easygallery_"+String(gallery_id)+"["+String(new_image_no)+"]");
	document.getElementById("easygallery_"+String(gallery_id)+"_bild").src = infos['source'];
	document.getElementById("easygallery_"+String(gallery_id)+"_balkentitel").innerHTML = infos['titeltext'];
	document.getElementById("easygallery_"+String(gallery_id)+"_legende").innerHTML = infos['legende'];
	
	
	// Thumbnail aktivieren/deaktivieren
	document.getElementById("easygallery_"+String(gallery_id)+"_thumb_"+String(current_image_no)).src = window.pfad_inactive_state_overlay;
	document.getElementById("easygallery_"+String(gallery_id)+"_thumb_"+String(new_image_no)).src = window.pfad_active_state_overlay;
	
	current_image_no = new_image_no;
	window.easygallery_current_images[gallery_id] = current_image_no;
	
	
	// VorwŠrts- und ZurŸck-Buttons aktivieren/deaktivieren
	if(current_image_no>0){
		document.getElementById("balkennavigation_"+String(gallery_id)+"_zurueck").className = "active";
	} else {
		document.getElementById("balkennavigation_"+String(gallery_id)+"_zurueck").className = "inactive";
	}
	
	if(total_images>0 && current_image_no+1<total_images){
		document.getElementById("balkennavigation_"+String(gallery_id)+"_weiter").className = "active";
	} else {
		document.getElementById("balkennavigation_"+String(gallery_id)+"_weiter").className = "inactive";
	}
	
}


/****************************************
	hover-Funktion fŸr die Thumbnails
****************************************/
function thumbnailHover(mouse_is_over,gallery_id,image_no){
	var current_image_no = window.easygallery_current_images[gallery_id];
	if(mouse_is_over){
		document.getElementById("easygallery_"+String(gallery_id)+"_thumb_"+String(image_no)).src = window.pfad_active_state_overlay;
	} else {
		if(image_no != current_image_no){
			document.getElementById("easygallery_"+String(gallery_id)+"_thumb_"+String(image_no)).src = window.pfad_inactive_state_overlay;
		}
	}
	
}


/****************************************
	Weiter- und ZurŸck-Funktionen
****************************************/
function displayEasyGalleryNextImage(gallery_id){
	var current_image_no = window.easygallery_current_images[gallery_id];
	var new_image_no = current_image_no+1;
	var total_images = eval("window.easygallery_"+String(gallery_id)+"_total_images");
	if(new_image_no<total_images){
		displayEasyGalleryImage(gallery_id,new_image_no);
	}
}
function displayEasyGalleryPreviousImage(gallery_id){
	var current_image_no = window.easygallery_current_images[gallery_id];
	var new_image_no = current_image_no-1;
	if(new_image_no>=0){
		displayEasyGalleryImage(gallery_id,new_image_no);
	}
}