var		isSupported = ( (parseInt) && (parseInt(navigator.appVersion) >= 4) );

//////////////////////////////////////////////////////////////////
//////////////////Object Definitions//////////////////////////////
//////////////////////////////////////////////////////////////////





//////////////////////////////////////////////////////////////////
//NavHead constructor
function NavHead(img, link, height, width)
{
	this.Img = img;
	this.Link = link;
	this.Height = height;
	this.Width = width;
}




//////////////////////////////////////////////////////////////////
//NavDesc constructor
function NavDesc(img, height, width)
{
	this.Img = img;
	this.Height = height;
	this.Width = width;
}




//////////////////////////////////////////////////////////////////
//NavCon constructor
function NavCon(imgs, links, height, width)
{
	if(imgs.length)
	{
		this.Number = imgs.length;
		this.Img = imgs;
		this.Link = links;
		this.Width = width;
		this.Height = height;
	}
	else
	{
		this.Number = 0;
		this.Img = 0;
		this.Link = 0;
		this.Width = 0;
		this.Height = 0;
	}
}





///////////////////////////////////////////////////////////////
//Nav Object constructor
function NavObject(head, desc, con, left, top, width, backcolor)
{
	var	tmph = 0;

	this.ID = -1;
	this.Head = head;
	this.Desc = desc;
	this.Con = con;
	this.Left = left;
	this.Top = top;
	this.Width = width;

		//figure out height
	if(con.Img.length)
	{
		tmph = con.Img.length * con.Height;
	}
	tmph = tmph + desc.Height;

	this.Height = tmph;
	this.BackGround = backcolor;

}













//////////////////////////////////////////////////////////////////
//NavControl constructor
function NavControl( path, navRay, navname)
{
	var		count;

	this.Nav = navRay;
	this.Path = path;
	this.NavName = navname;
	this.LastVisible = -1;
	this.IsOver = 0;

		//methods
	this.Create = NavControl_CreateNav;
	this.CreateStyles = NavControl_CreateStyle;
	this.CreateHeader = NavControl_CreateHeader;

	this.OverNav = NavControl_OverNav;
	this.OutOfNav = NavControl_OutOfNav;
	this.ShowNav = NavControl_ShowNav;
	this.OnTimer = NavControl_OnTimer;
	this.Adjust = NavControl_Adjust;
	this.PreCache = NavControl_PreCache;

	if(navRay.length)
	{
		this.NavNumber = navRay.length;

		for(count=0; count < navRay.length; count++)
		{
			this.Nav[count].ID = count;
		}
		
		this.Adjust();
	}
	else
	{
		this.NavNumber = 0;
	}
}










//////////////////////////////////////////////////////////////////
/////////////////////NavControl Methods///////////////////////////
//////////////////////////////////////////////////////////////////



//////////////////////////////////////////////////////////////////
//CreateNav
function NavControl_CreateNav()
{
	var		count;
	var		lcount;
	var		tmpString = '';
	var		layName = '';
	var		tmpObj;
	var		overString;
	var		outString;


	if(this.Nav && this.Nav.length && isSupported)
	{
		for(count=0; count<this.Nav.length; count++)
		{
			layName = this.NavName + count;
			tmpString = tmpString + CreateDiv(layName);

			overString = this.NavName + '.OverNav(' + count + ',1)';
			outString = this.NavName + '.OutOfNav(' + count + ',1)';
			tmpString = tmpString + CreateLink('#', overString, outString);
			tmpString = tmpString + CreateImg(this.Path, this.Nav[count].Desc.Img, this.Nav[count].Desc.Height, this.Nav[count].Desc.Width);
			tmpString = tmpString + '</a>';
			if(this.Nav && this.Nav[count].Con.Img.length)
			{
				for(lcount=0; lcount<this.Nav[count].Con.Img.length;lcount++)
				{
					tmpObj = this.Nav[count].Con;
					overString = this.NavName + '.OverNav(' + count + ',' + (lcount+2) + ')';
					outString = this.NavName + '.OutOfNav(' + count + ',' + (lcount+2) + ')';
					tmpString = tmpString + CreateLink(tmpObj.Link[lcount],overString, outString);
					tmpString = tmpString + CreateImg(this.Path, tmpObj.Img[lcount], tmpObj.Height, tmpObj.Width);
					tmpString = tmpString + '</a>';
					tmpString = tmpString + '<br>';
				}
			}
			tmpString = tmpString + '</div>';
		}

	document.open();
	document.write(tmpString);
	document.close();

			//StartTimer
		timerString = 'eval(' + this.NavName + '.OnTimer())';
		setInterval(timerString, 500);

		//PreCache
	this.PreCache();

	}
}











//////////////////////////////////////////////////////////////////
//CreateStyles
function NavControl_CreateStyle()
{
	var	result = '';
	var	divName;
	var	count;
	var	tmpleft;
	var	tmptop;
	var	tmpheight;
	var	tmpwidth;

	if(this.Nav && this.Nav.length && isSupported)
	{
		result = '<Style Typt="text/css">';
		for(count=0; count<this.Nav.length; count++)
		{
			divName = this.NavName + count;
			tmpleft = -1000; //this.Nav[count].Left;
			tmptop = this.Nav[count].Top;
			tmpheight = this.Nav[count].Height;
			tmpwidth = this.Nav[count].Width;
			result = result + CreateStyle(divName, tmpleft, tmptop, tmpheight, tmpwidth) + '\n';
		}
		result = result + '</Style>';

	document.open();
	document.write(result);
	document.close();

	}
}





//////////////////////////////////////////////////////////////////
//CreateStyles
function NavControl_CreateHeader()
{
	var		result = '';
	var		tmpObj = 0;
	var		count;
	var		overString;
	var		outString;

	if(this.Nav)
	{
		//result = result + '<table width="720" border="0" cellspacing="0" cellpadding="0">';
		//result = result + '<tr><td width="720"  height="80" align="left" valign="top" >';
		//result = result + CreateImg(this.Path, 'trans', 20, 220);

		for(count=0; count<this.Nav.length; count++)
		{
			tmpObj = this.Nav[count].Head;
			if(tmpObj)
			{
				overString = this.NavName + '.OverNav(' + count + ',0)';
				outString = this.NavName + '.OutOfNav(' + count + ',0)';
				result = result + CreateLink(tmpObj.Link, overString, outString);
				result = result + CreateImg(this.Path, tmpObj.Img, tmpObj.Height, tmpObj.Width);
				result = result + '</a>';
			}	
		}
	}

	//result = result +  '</td></tr></table>';	

	document.open();
	document.write(result);
	document.close();
}







//////////////////////////////////////////////////////////////////
//ShowNav
function NavControl_ShowNav(navobj, state)
{
	var		layObj;
	var		layName;
	var		amount = (state) ? navobj.Left : -1000;

	if(navobj)
	{
		layName = this.NavName + navobj.ID;
		layObj = GetLay(layName);
		layObj = (layObj && layObj.style) ? layObj.style : layObj;


		if(layObj)
		{
			layObj.left = amount;

				//set head image
			if(!state){
			DoRoll(0, navobj.Head.Img , this.Path, 0);}
		}
	}

}



//////////////////////////////////////////////////////////////////
//OverNav
//	0 = head, 1 = desc, ... = con
function NavControl_OverNav(navpos, imgpos)
{
	if(isSupported)
	{
	var		imgName = 0;
	var		layName = (imgpos==0) ? 0 : this.NavName + navpos;

	if( (this.LastVisible >= 0) && (this.LastVisible != navpos) )
	{
		this.ShowNav(this.Nav[this.LastVisible], 0);
	}

	this.LastVisible = navpos;
	this.IsOver = 1;
	
	this.ShowNav(this.Nav[navpos], 1);

	if( (imgpos >=0) && (imgpos != 1) )
	{
		imgName = (imgpos == 0) ? this.Nav[navpos].Head.Img : this.Nav[navpos].Con.Img[(imgpos-2)];
		DoRoll( layName, imgName, this.Path, 1);
	}
	}
}





//////////////////////////////////////////////////////////////////
//OutOfNav
//	0 = head, 1 = desc, ... = con
function NavControl_OutOfNav(navpos, imgpos)
{
	if(isSupported)
	{
	var		imgName = 0;
	var		layName = (imgpos==0) ? 0 : this.NavName + navpos;

	this.IsOver = 0;

		//do rollout
	if(imgpos > 1)
	{
		imgName = (imgpos == 0) ? this.Nav[navpos].Head.Img : this.Nav[navpos].Con.Img[(imgpos-2)];
		DoRoll(layName, imgName, this.Path, 0);
	}
	}
}






//////////////////////////////////////////////////////////////////
//Adjust
function NavControl_Adjust()
{
	var		count;
	var		lamount = 0;
	var		tamount = 0;

	if(this.Nav.length)
	{
		if(navigator.appName.indexOf("Netscape") >= 0)
		{
			lamount = 7;
			tamount = 8;
		}
		else if(navigator.appName.indexOf("Explorer") >=0 )
		{
			lamount = 9;
			tamount = 15;
		}

		for(count=0; count<this.Nav.length; count++)
		{
			this.Nav[count].Left = this.Nav[count].Left + lamount;
			this.Nav[count].Top = this.Nav[count].Top + tamount;
		}
	}
}





//////////////////////////////////////////////////////////////////
//OnTimer
function NavControl_OnTimer()
{
	if( (!this.IsOver) && (this.LastVisible >= 0) )
	{
		this.ShowNav(this.Nav[this.LastVisible], 0);
		this.LastVisible = -1;
	}
}






//////////////////////////////////////////////////////////////////
//PreCache
function NavControl_PreCache()
{
	var		tmpObj = new Image();
	var		count;
	var		lcount;

	if(this.Nav && this.Nav.length)
	{
		for(count=0; count<this.Nav.length; count++)
		{
				//load header
			tmpObj.src = this.Path + this.Nav[count].Head.Img + "On.gif";

				//load links
			if(this.Nav[count].Con && this.Nav[count].Con.Img && this.Nav[count].Con.Img.length)
			{
				for(lcount=0; lcount<this.Nav[count].Con.Img.length; lcount++)
				{
					tmpObj.src = this.Path + this.Nav[count].Con.Img[lcount] + "On.gif";
				}
			}
		}
	}

}