function nav2size(height)
{
	document.getElementById('nav2').style.height = height;
}

function nav3size(height)
{
	document.getElementById('nav3').style.height = height;
}

function nav2()
{
	document.getElementById('n1_3').className = "";
	document.getElementById('nav2').innerHTML = '';
	document.getElementById('nav3').innerHTML = '';
	var nav2height = document.getElementById('nav2').style.height;
	if (nav2height == '20px')
	{
		var nav3height = document.getElementById('nav3').style.height;
		if (nav3height == '20px')
		{
			setTimeout("nav3size('18px')", 0);
			setTimeout("nav3size('16px')", 45);
			setTimeout("nav3size('14px')", 80);
			setTimeout("nav3size('12px')", 110);
			setTimeout("nav3size('9px')", 140);
				setTimeout("nav2size('18px')", 190);
				setTimeout("nav2size('16px')", 220);
				setTimeout("nav2size('14px')", 245);
				setTimeout("nav2size('13px')", 265);
		}else{
			setTimeout("nav2size('18px')", 0);
				setTimeout("nav3size('4px')", 0);
			setTimeout("nav2size('16px')", 55);
				setTimeout("nav3size('6px')", 55);
			setTimeout("nav2size('14px')", 100);
				setTimeout("nav3size('8px')", 100);
			setTimeout("nav2size('13px')", 140);
				setTimeout("nav3size('9px')", 140);
		}
	}
}

function nav2menu(cat)
{
	var nav2 = new Array();
	nav2[0] = '';
	nav2[1] = '';
	nav2[2] = '';
	nav2[3] = '<a href="/products/sulcoflex/" id="n2_1" onMouseOver="nav3p(1,1);">Sulcoflex </a><a href="/products/multifocal/" id="n2_2" onMouseOver="nav3p(2,1);">Multifocal </a><a href="/products/toric/" id="n2_3" onMouseOver="nav3p(3,1);">Toric </a><a href="/products/spherical/" id="n2_4" onMouseOver="nav3p(4,1);">Spherical </a><a href="/products/aspheric/" id="n2_5" onMouseOver="nav3p(5,1);">Aspheric </a><a href="/products/customized/" id="n2_6" onMouseOver="nav3p(6,1);">Customized </a><a href="/products/pmma/" id="n2_7" onMouseOver="nav3p(7,1);">PMMA </a><a href="/products/surgical/" id="n2_8" onMouseOver="nav3p(8,1);">Surgical equipment </a>';
	nav2[4] = '';
	nav2[5] = '';
	nav2[6] = '';
	nav2[7] = '';
	document.getElementById('n1_3').className = "hov";
	var nav2height = document.getElementById('nav2').style.height;
	if (nav2height != '20px')
	{
		setTimeout("nav2size('14px')", 0);
			setTimeout("nav3size('8px')", 0);
		setTimeout("nav2size('16px')", 60);
			setTimeout("nav3size('6px')", 60);
		setTimeout("nav2size('18px')", 120);
			setTimeout("nav3size('4px')", 120);
		setTimeout("nav2size('20px')", 170);
			setTimeout("nav3size('2px')", 170);
	}
	document.getElementById('nav2').innerHTML = nav2[cat];
}

function nav2_class()
{
	if (document.getElementById('n2_1').className == "hov")
	document.getElementById('n2_1').className = "";
	else if (document.getElementById('n2_1').className == "selected")
	document.getElementById('n2_1').className = "selhov";
	if (document.getElementById('n2_2').className == "hov")
	document.getElementById('n2_2').className = "";
	else if (document.getElementById('n2_2').className == "selected")
	document.getElementById('n2_2').className = "selhov";
	if (document.getElementById('n2_3').className == "hov")
	document.getElementById('n2_3').className = "";
	else if (document.getElementById('n2_3').className == "selected")
	document.getElementById('n2_3').className = "selhov";
	if (document.getElementById('n2_4').className == "hov")
	document.getElementById('n2_4').className = "";
	else if (document.getElementById('n2_4').className == "selected")
	document.getElementById('n2_4').className = "selhov";
	if (document.getElementById('n2_5').className == "hov")
	document.getElementById('n2_5').className = "";
	else if (document.getElementById('n2_5').className == "selected")
	document.getElementById('n2_5').className = "selhov";
	if (document.getElementById('n2_6').className == "hov")
	document.getElementById('n2_6').className = "";
	else if (document.getElementById('n2_6').className == "selected")
	document.getElementById('n2_6').className = "selhov";
	if (document.getElementById('n2_7').className == "hov")
	document.getElementById('n2_7').className = "";
	else if (document.getElementById('n2_7').className == "selected")
	document.getElementById('n2_7').className = "selhov";
	if (document.getElementById('n2_8').className == "hov")
	document.getElementById('n2_8').className = "";
	else if (document.getElementById('n2_8').className == "selected")
	document.getElementById('n2_8').className = "selhov";
}

function nav3p(cat,resize)
{
	if (resize == null) {
		resize = 0;
	}
	document.getElementById('nav3').innerHTML = '';
	nav2_class();
	if (document.getElementById('n2_'+cat).className == "")
	document.getElementById('n2_'+cat).className = "hov";
	else if (document.getElementById('n2_'+cat).className == "selhov")
	document.getElementById('n2_'+cat).className = "selected";
	var nav3 = new Array();
	nav3[1] = '<a href="/products/sulcoflex/intro">Introduction </a><a href="/products/sulcoflex/sulcoflex-aspheric">Sulcoflex Aspheric </a><a href="/products/sulcoflex/sulcoflex-toric">Sulcoflex Toric </a><a href="/products/sulcoflex/sulcoflex-multifocal">Sulcoflex Multifocal </a>';
	nav3[2] = '<div style="margin-left:5em"><a href="/products/multifocal/m-flex">M-flex </a><a href="/products/multifocal/m-flex-t">M-flexT </a><a href="/products/multifocal/sulcoflex-multifocal">Sulcoflex Multifocal </a></div>';
	nav3[3] = '<div style="margin-left:12em"><a href="/products/toric/t-flex">T-flex Aspheric </a><a href="/products/toric/m-flex-t">M-flexT </a><a href="/products/toric/sulcoflex-toric">Sulcoflex Toric </a></div>';
	nav3[4] = '<div style="margin-left:18em"><a href="/products/spherical/c-flex">C-flex </a><a href="/products/spherical/superflex">Superflex </a></div>';
	nav3[5] = '<div style="margin-left:22.5em"><a href="/products/aspheric/intro">Introduction </a><a href="/products/aspheric/c-flex">C-flex Aspheric </a><a href="/products/aspheric/superflex">Superflex Aspheric </a><a href="/products/aspheric/sulcoflex-aspheric">Sulcoflex Aspheric </a></div>';
	nav3[6] = '<div style="margin-left:34em"><a href="/products/customized/">Customized IOLs </a></div>';
	nav3[7] = '<div style="margin-left:37em"><a href="/products/pmma/intro">Introduction </a><a href="/products/pmma/anterior">Anterior Chamber </a><a href="/products/pmma/posterior">Posterior Chamber </a></div>';
	nav3[8] = '<div style="margin-left:40em"><a href="/products/surgical/centerring">Centerring </a><a href="/products/surgical/rayvisc">Rayvisc </a><a href="/products/surgical/titanium">Titanium Range </a><a href="/products/surgical/iris-retractor">Iris Retractor </a><a href="/products/surgical/dorc">DORC </a></div>';
	if (resize == 1) {
		var nav3height = document.getElementById('nav3').style.height;
		if (nav3height != '20px')
		{
			setTimeout("nav3size('12px')", 0);
			setTimeout("nav3size('14px')", 60);
			setTimeout("nav3size('16px')", 120);
			setTimeout("nav3size('18px')", 150);
			setTimeout("nav3size('20px')", 180);
		}
	}
	document.getElementById('nav3').innerHTML = nav3[cat];
}

function openwindow(url,height)
{
	if (height > 0) height = height;
	else height = 600;

	//get widths and heights of the visitors screen
	var leftPos = (screen.width - 650) / 2;
	var topPos = (screen.height - height) / 2;
	
	newWindow = window.open(url,'popup','location=no, status=no, resizable=yes, scrollbars=yes, width=650, height=' + height + ', top=' + topPos + ', left=' + leftPos);
	newWindow.window.focus();
}