function display(display_id) {
	$("#display-area").fadeOut('fast', function() {
		$("#display-area").load(disppages[display_id], function() {
			$("#display-area").fadeIn('fast');
			});
		});
	}


function DisplayThumb(nav_strip_item, url) {
	$("#nav-strip-item" + nav_strip_item).fadeOut('fast', function() {
		$("#nav-strip-item" + nav_strip_item).load(url, function() {
			$("#nav-strip-item" + nav_strip_item).fadeIn('fast');
			});
		});		
	}


function leftarrow() {
	var last_item, first_item, item_id_index, actual_id;		
	if (currentpage == 1) { currentpage = maxpage; }
	else { currentpage = currentpage - 1; }
	last_item = currentpage * nav_per_page;
	first_item = currentpage * nav_per_page - (nav_per_page - 1);
	item_id_index = 1;
	
	for (var nav_item_id = first_item; nav_item_id <= last_item; nav_item_id++) {
		actual_id = nav_item_id - 1;		
		
		if (actual_id >= navpages.length) { 
			$("#nav-strip-item" + item_id_index).load("blank.html");				
		}
		else {
			DisplayThumb(item_id_index, navpages[actual_id]);
			}
		item_id_index++;
		} 
	}

function rightarrow() {
	
	var last_item, first_item, item_id_index, actual_id;
	if (currentpage == maxpage) { currentpage = 1; }
	else { currentpage = currentpage + 1; }
	last_item = currentpage * nav_per_page;
	first_item = currentpage * nav_per_page - (nav_per_page - 1);
	item_id_index = 1;
	for (var nav_item_id = first_item; nav_item_id <= last_item; nav_item_id++) {
		actual_id = nav_item_id - 1;	
				
		if (actual_id >= navpages.length) { 
			$("#nav-strip-item" + item_id_index).load("blank.html");				
			}
		else { 
			DisplayThumb(item_id_index, navpages[actual_id]);
//			$("#nav-strip-item" + item_id_index).load(navpages[actual_id]);
		}		
		item_id_index++;		
		} 
	}




function selectitem(select_id) {
	var disp, display_id;
		
	if(select_id==1) { display_offset = 4; }
	else if(select_id==2) { display_offset = 3; }
	else if(select_id==3) { display_offset = 2; }
	else { display_offset = 1; }		
	
	disp = currentpage*nav_per_page;
	display_id = disp - display_offset;
	display(display_id);
	
	
	}