function mainNav()
{
	if(!document.getElementsByTagName || !document.getElementById)
	{
		Effect.toggle("touch_sec", "blind", {duration: 0.1});
		Effect.toggle("nano_sec", "blind", {duration: 0.1});
		Effect.toggle("classic_sec", "blind", {duration: 0.1});
		Effect.toggle("iphone_sec", "blind", {duration: 0.1});
		Effect.toggle("appletv_sec", "blind", {duration: 0.1});
		return false;
	}
	// iPod touch
	if($("touch_link"))
	{
 
			
		$("touch_link").onmouseover = function()
		{
			//Effect.toggle("touch_sec", "appear", {duration: 0.5});
			if($("nano_sec"))
			{
				Effect.BlindUp($("nano_sec"), {duration: 0.2});
			}
			if($("classic_sec"))
			{
				Effect.BlindUp($("classic_sec"), {duration: 0.2});
			}
			if($("iphone_sec"))
			{
				Effect.BlindUp($("iphone_sec"), {duration: 0.2});
			}
			if($("appletv_sec"))
			{
				Effect.BlindUp($("appletv_sec"), {duration: 0.2});
			}
			if($("all_sec"))
			{
				Effect.BlindUp($("all_sec"), {duration: 0.2});
			}
			if($("about_sec"))
			{
				Effect.BlindUp($("about_sec"), {duration: 0.2});
			}
			
			if(Element.hasClassName($("touch_link"), "tab_on"))
			{
				$("touch_link").removeClassName("tab_on");
				$("touch_link").addClassName("tab");
			}
			else
			{
				$("touch_link").removeClassName("tab");
				$("touch_link").addClassName("tab_on");
				$("nano_link").removeClassName("tab_on");
				$("nano_link").addClassName("tab");
				$("iphone_link").removeClassName("tab_on");
				$("iphone_link").addClassName("tab");
				$("appletv_link").removeClassName("tab_on");
				$("appletv_link").addClassName("tab");
			}
			
			Effect.toggle("touch_sec", "blind", {duration: 0.2});
			return false;
		}
	}
	
	// iPod nano
	if($("nano_link"))
	{	
		 /* $("nano_link").onmouseout = function(){
				Effect.toggle("nano_sec", "blind", {duration: 0.2});
				return false;
		 }*/
		$("nano_link").onmouseover = function()
		{
			if($("touch_sec"))
			{
				Effect.BlindUp($("touch_sec"), {duration: 0.2});
			}
			if($("classic_sec"))
			{
				Effect.BlindUp($("classic_sec"), {duration: 0.2});
			}
			if($("iphone_sec"))
			{
				Effect.BlindUp($("iphone_sec"), {duration: 0.2});
			}
			if($("appletv_sec"))
			{
				Effect.BlindUp($("appletv_sec"), {duration: 0.2});
			}
			if($("all_sec"))
			{
				Effect.BlindUp($("all_sec"), {duration: 0.2});
			}
			if($("about_sec"))
			{
				Effect.BlindUp($("about_sec"), {duration: 0.2});
			}
			
			if(Element.hasClassName($("nano_link"), "tab_on"))
			{
				$("nano_link").removeClassName("tab_on");
				$("nano_link").addClassName("tab");
			}
			else
			{
				$("touch_link").removeClassName("tab_on");
				$("touch_link").addClassName("tab");
				$("nano_link").removeClassName("tab");
				$("nano_link").addClassName("tab_on");
				$("iphone_link").removeClassName("tab_on");
				$("iphone_link").addClassName("tab");
				$("appletv_link").removeClassName("tab_on");
				$("appletv_link").addClassName("tab");
			}
			
			Effect.toggle("nano_sec", "blind", {duration: 0.2});
			return false;


		}
	}

	
	// iPhone
	if($("iphone_link"))
	{
		/* $("iphone_link").onmouseout = function(){
				Effect.toggle("iphone_sec", "blind", {duration: 0.2});
				return false;
		 }*/
		$("iphone_link").onmouseover = function()
		{
			if($("touch_sec"))
			{
				Effect.BlindUp($("touch_sec"), {duration: 0.2});
			}
			if($("nano_sec"))
			{
				Effect.BlindUp($("nano_sec"), {duration: 0.2});
			}
			if($("classic_sec"))
			{
				Effect.BlindUp($("classic_sec"), {duration: 0.2});
			}
			if($("appletv_sec"))
			{
				Effect.BlindUp($("appletv_sec"), {duration: 0.2});
			}
			if($("all_sec"))
			{
				Effect.BlindUp($("all_sec"), {duration: 0.2});
			}
			if($("about_sec"))
			{
				Effect.BlindUp($("about_sec"), {duration: 0.2});
			}
			
			if(Element.hasClassName($("iphone_link"), "tab_on"))
			{
				$("iphone_link").removeClassName("tab_on");
				$("iphone_link").addClassName("tab");
			}
			else
			{
				$("touch_link").removeClassName("tab_on");
				$("touch_link").addClassName("tab");
				$("nano_link").removeClassName("tab_on");
				$("nano_link").addClassName("tab");
				$("iphone_link").removeClassName("tab");
				$("iphone_link").addClassName("tab_on");
				$("appletv_link").removeClassName("tab_on");
				$("appletv_link").addClassName("tab");
			}
			
			Effect.toggle("iphone_sec", "blind", {duration: 0.2}); 
			return false;
		}
	}
	
	// AppleTV
	if($("appletv_link"))
	{
		/* $("appletv_link").onmouseout = function(){
				Effect.toggle("appletv_sec", "blind", {duration: 0.2});
				return false;
		 }*/
		$("appletv_link").onmouseover = function()
		{
			if($("touch_sec"))
			{
				Effect.BlindUp($("touch_sec"), {duration: 0.2});			
			}
			if($("nano_sec"))
			{
				Effect.BlindUp($("nano_sec"), {duration: 0.2});
			}
			if($("classic_sec"))
			{
				Effect.BlindUp($("classic_sec"), {duration: 0.2});
			}
			if($("iphone_sec"))
			{
				Effect.BlindUp($("iphone_sec"), {duration: 0.2});
			}
			if($("all_sec"))
			{
				Effect.BlindUp($("all_sec"), {duration: 0.2});
			}
			if($("about_sec"))
			{
				Effect.BlindUp($("about_sec"), {duration: 0.2});
			}
			
			if(Element.hasClassName($("appletv_link"), "tab_on"))
			{
				$("appletv_link").removeClassName("tab_on");
				$("appletv_link").addClassName("tab");
			}
			else
			{
				$("touch_link").removeClassName("tab_on");
				$("touch_link").addClassName("tab");
				$("nano_link").removeClassName("tab_on");
				$("nano_link").addClassName("tab");
				$("iphone_link").removeClassName("tab_on");
				$("iphone_link").addClassName("tab");
				$("appletv_link").removeClassName("tab");
				$("appletv_link").addClassName("tab_on");
			}
			
			Effect.toggle("appletv_sec", "blind", {duration: 0.2});
			return false;	
		}
	}

}