var nav = "";
var currOpen = "mainmenu";

function init()
{
	if (document.layers)
		nav = "ns4";
	else if (document.all)
		nav = "ie4";
	else
		nav = "old";
		
	if (nav == "ns4")
	{
		document.layers['menu'] = new Layer(300);
		document.layers.menu.visibility = "hidden";
		loadMenu("menu.html");
		document.layers.menu.top = 10;
		document.layers.menu.clip.height = 60;
		document.layers.menu.height = 60;
		document.layers.menu.clip.width = 600;
		document.layers.menu.width = 600;
		document.layers.menu.visibility = "visible";
		document.layers.ncontents.clip.height = 300;
		document.layers.ncontents.clip.width = 150;
		document.layers.ncontents.visibility = "visible";
		setInterval("moveWaterMark()", 100);
	} else if (nav == "ie4") {
		document.body.insertAdjacentHTML("BeforeEnd",'<DIV ID="menu" STYLE="position:absolute; width:600; height:360; z-index:3; visibility:visible"></DIV>');
		loadMenu('imenu.html');
		document.body.insertAdjacentHTML("BeforeEnd",'<DIV ID="contents" STYLE="position:absolute; left:0; top:70; width:150; height:300; z-index:3; background-image:url(graphics/leftmenu.gif); visibility:visible"></DIV>');
		document.all.contents.innerHTML = document.frames.mloader.document.body.innerHTML;
		setInterval("moveWaterMark()", 100);
	} else {
	}
}

function loadMenu(url)
{
	if (nav == "ns4")
	{
		document.layers.menu.load(url,400);
	} else if (nav == "ie4") {
		document.frames.loader.location.href = url;
		document.all.menu.innerHTML = document.frames.loader.document.body.innerHTML;
	} else {
	}
}

function moveWaterMark()
{
	if (nav == "ns4")
	{
		document.layers.menu.top = window.pageYOffset + 10;
		document.layers.menu.left = 0;
		document.layers.menu.zIndex = 1;
		document.layers.menu.visibility = "visible";
		document.layers.ncontents.top = window.pageYOffset + 70;
		document.layers.ncontents.left = 0;
		document.layers.ncontents.zIndex = 10;
		document.layers.ncontents.visibility = "visible";
	} else if (nav == "ie4") {
		document.all.menu.style.top = document.body.scrollTop + 10;
		document.all.menu.style.left = 0;
		document.all.menu.style.zIndex = 1;
		document.all.menu.style.visibility = "visible";
		document.all.contents.style.top = document.body.scrollTop + 70;
		document.all.contents.style.left = 0;
		document.all.contents.style.zIndex = 1;
		document.all.contents.style.visibility = "visible";
	}
}

function openLeft(url)
{
	if(nav == "ns4")
	{
		document.layers.menu.document.contents.visibility = "visible";
		while (document.layers.menu.document.contents.top < 60)
		{
			setTimeout("",10)
			document.layers.menu.document.contents.top += 10;
		}
		document.layers.menu.document.contents.load(url, 150);
	} else if (nav == "ie4") {
		document.all.contents.style.visibility = "visible";
		while (parseInt(document.all.contents.style.top) < 60)
		{
			setTimeout("",10)
			document.all.contents.style.top = parseInt(document.all.contents.style.top) + 10;
		}
		document.frames.loader.location.href = url;
		document.all.contents.innerHTML = document.frames.loader.document.body.innerHTML;
	}
}

function closeLeft()
{
	if(nav == "ns4")
	{
		while (document.layers.menu.document.contents.top < 60)
		{
			setTimeout("",10)
			document.layers.menu.document.contents.top -= 10;
		}
		document.layers.menu.document.contents.visibility = "hidden";
	} else if (nav == "ie4") {
		while (parseInt(document.all.contents.style.top) < 60)
		{
			setTimeout("",10)
			document.all.contents.style.top = parseInt(document.all.contents.style.top) - 10;
		}
		document.all.contents.style.visibility = "hidden";
	}
}

function openMenu(daMenu)
{
	if(nav == "ns4")
	{
		if (document.layers.menu.document.layers[currOpen].left > -300)
			closeMenu(currOpen);
		currOpen = daMenu;
		document.layers.menu.document.layers[daMenu].visibility = "visible";
		while (document.layers.menu.document.layers[daMenu].left < 150)
		{
			setTimeout("",10)
			document.layers.menu.document.layers[daMenu].left += 50;
		}
	} else if (nav == "ie4") {
		if (parseInt(document.all[currOpen].style.left) > -300)
			closeMenu(currOpen);
		currOpen = daMenu;
		document.all[daMenu].style.visibility = "visible";
		while (parseInt(document.all[daMenu].style.left) < 150)
		{
			setTimeout("",10)
			document.all[daMenu].style.left = parseInt(document.all[daMenu].style.left) + 50;
		}
	}
}

function closeMenu(daMenu)
{
	if (nav == "ns4")
	{
		while (document.layers.menu.document.layers[daMenu].left > -300)
		{
			setTimeout("",10)
			document.layers.menu.document.layers[daMenu].left -= 50;
		}
		document.layers.menu.document.layers[daMenu].visibility = "hidden";
	} else if (nav == "ie4") {
		while (document.all[daMenu].style.left > -300)
		{
			setTimeout("",10)
			document.all[daMenu].style.left = parseInt(document.all[daMenu].style.left) - 50;
		}
		document.all[daMenu].style.visibility = "hidden";
	}
}