function navCurrent(b)
{
	document.getElementById("navlink" + b).setAttribute("class", "navActive");
	switch(b)
	{
		case 1:
	 	document.getElementById("navbox" + b).style.backgroundImage="url(images/productnav_megajoist.gif)";
	  	break;
		case 2:
	  	document.getElementById("navbox" + b).style.backgroundImage="url(images/productnav_ultrabond.gif)";
	   	break;
	  	case 3:
	  	document.getElementById("navbox" + b).style.backgroundImage="url(images/productnav_deltastud.gif)";
	  	break;
	  	case 4:
	  	document.getElementById("navbox" + b).style.backgroundImage="url(images/productnav_deltacomposite.gif)";
	  	break;
	}
}

function navOver(a)
{
	document.getElementById("navlink" + a).setAttribute("class", "navActive");
}

function navOut(a)
{
	if (currentNav != a)
	{
		document.getElementById("navlink" + a).setAttribute("class", "nav");
	}
}

function productOver(a)
{
	document.getElementById("navlink" + a).setAttribute("class", "navActive");
	switch(a)
	{
		case 1:
	 	document.getElementById("navbox" + a).style.backgroundImage="url(images/productnav_megajoist.gif)";
	 	if (products == true)
	 	{
	 		document.getElementById("megajoist").src="images/megajoist_img_nav_glow.jpg";
	 	}
	  	break;
		case 2:
	  	document.getElementById("navbox" + a).style.backgroundImage="url(images/productnav_ultrabond.gif)";
	  	if (products == true)
	 	{
	 		document.getElementById("ultrabond").src="images/ultrabond_img_nav_glow.jpg";
	 	}
	   	break;
	  	case 3:
	  	document.getElementById("navbox" + a).style.backgroundImage="url(images/productnav_deltastud.gif)";
	  	if (products == true)
	 	{
	 		document.getElementById("deltastud").src="images/deltastud_img_nav_glow.jpg";
	 	}
	  	break;
	  	case 4:
	  	document.getElementById("navbox" + a).style.backgroundImage="url(images/productnav_deltacomposite.gif)";
	  	if (products == true)
	 	{
	 		document.getElementById("deltacomp").src="images/deltastud_composite_img_nav_glow.jpg";
	 	}
	  	break;
	}
}

function productOut(a)
{
	if (a !== currentNav)
	{
		switch(a)
		{
			case 1:
			document.getElementById("navlink" + a).setAttribute("class", "nav");
		 	document.getElementById("navbox" + a).style.backgroundImage="none";
		 	if (products == true)
		 	{
		 		document.getElementById("megajoist").src="images/megajoist_img_nav.jpg";
		 	}
		  	break;
			case 2:
			document.getElementById("navlink" + a).setAttribute("class", "nav");
		  	document.getElementById("navbox" + a).style.backgroundImage="none";
		  	if (products == true)
		 	{
		 		document.getElementById("ultrabond").src="images/ultrabond_img_nav.jpg";
		 	}
		   	break;
		  	case 3:
		  	document.getElementById("navlink" + a).setAttribute("class", "nav");
		  	document.getElementById("navbox" + a).style.backgroundImage="none";
		  	if (products == true)
		 	{
		 		document.getElementById("deltastud").src="images/deltastud_img_nav.jpg";
		 	}
		  	break;
		  	case 4:
		  	document.getElementById("navlink" + a).setAttribute("class", "nav");
		  	document.getElementById("navbox" + a).style.backgroundImage="none";
		  	if (products == true)
		 	{
		 		document.getElementById("deltacomp").src="images/deltastud_composite_img_nav.jpg";
		 	}
		  	break;
		}
	}
}

function projectOver(a)
{
	document.getElementById("navlink" + a).setAttribute("class", "navActive");
	if (projects == true)
	{
		switch(a)
		{
			case 13:
			document.getElementById("gov").src="images/gov-col.gif";
			break;
			case 15:
			document.getElementById("res").src="images/res-col.gif";
			break;
			case 11:
			document.getElementById("com").src="images/com-col.gif";
			break;
			case 12:
			document.getElementById("edu").src="images/edu-col.gif";
			break;
		}
	}
}

function projectOut(a)
{
	if (currentNav != a)
	{
		document.getElementById("navlink" + a).setAttribute("class", "nav");
		if (projects == true)
		{
			switch(a)
			{
				case 13:
			 	document.getElementById("gov").src="images/gov-bw.gif";
			  	break;
				case 15:
			 	document.getElementById("res").src="images/res-bw.gif";
			   	break;
			  	case 11:
			 	document.getElementById("com").src="images/com-bw.gif";
			  	break;
			  	case 12:
			 	document.getElementById("edu").src="images/edu-bw.gif";
			  	break;
			}
		}
	}
}

function slideSwitch() {
    var $active = $('#slideshow IMG.active');

    if ( $active.length == 0 ) $active = $('#slideshow IMG:last');

    var $next =  $active.next().length ? $active.next()
        : $('#slideshow IMG:first');

    $active.addClass('last-active');

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
        });
}