var all_slides = 0;

$(document).ready(function() {
	$("#current_slide").val("1"); 
	$("div.slides_block").each(function() {
		all_slides++;
	});
	
	if(all_slides > 1)
	{
		setTimeout("change_slides()", 5000);
	}
	
	$("#control_back").click(function() {
		back();
	});
	
	$("#control_next").click(function() {
		next();
	});
	
	$("p.text_slides").click(function() {
		var id = $(this).attr("id").split("_");
		show_slide(id[1]);
	});
	
	if($.browser.msie)
	{
		$("a.ports_main_link").hover(function() {
			$(this).children().show();
		}, function() {
			$(this).children().hide();
		});
	}
	else
	{
		$("a.ports_main_link").hover(function() {
			$(this).children().stop();
			$(this).children().animate({"opacity": "show"}, 400);
		}, function() {
			$(this).children().stop();
			$(this).children().animate({"opacity": "hide"}, 400);
		});
	}
});

function back()
{
	var current_slide = parseInt($.trim($("#current_slide").val()));
	var back_slide = (current_slide - 1 == 0) ? all_slides : current_slide - 1;
	show_slide(back_slide);
}

function next()
{
	var current_slide = parseInt($.trim($("#current_slide").val()));
	var next_slide = (current_slide + 1 > all_slides) ? 1 : current_slide + 1;
	show_slide(next_slide);
}

function show_slide(num)
{
	$("div.slides_block").css("display", "none");
	$("#slide_" + num + "_box").css("display", "block");
	
	$("p.text_slides").css("color", "#767676");
	$("p.text_slides").css("font", "bold 9pt/11pt arial");
	$("#slides_" + num).css("color", "#e80000");
	$("#slides_" + num).css("font", "bold 13pt/11pt arial");
	
	$("#current_slide").val(num);
}

function change_slides()
{
	next();
	setTimeout("change_slides()", 5000);
}