var FilterState = "all"; 

function FilterStartup() {
	var FAll = new Image(); 
	var FAnimation = new Image(); 
	var FWeb = new Image(); 
	var FIllustration = new Image(); 
		if (navigator.appName == 'Microsoft Internet Explorer') { //preload jpegs for IE
			FAll.src = "http://www.spacetoast.net/Graphics/unnati/Filter-All.jpg";
		FAnimation.src = "http://www.spacetoast.net/Graphics/unnati/Filter-Animation.jpg";
		FWeb.src = "http://www.spacetoast.net/Graphics/unnati/Filter-Web.jpg";
		FIllustration.src = "http://www.spacetoast.net/Graphics/unnati/Filter-Illustration.jpg";
	} 
	else { //Preload transparent PNGs for standards-compliant browsers
		FAll.src = "http://www.spacetoast.net/Graphics/unnati/Filter-All.png";
		FAnimation.src = "http://www.spacetoast.net/Graphics/unnati/Filter-Animation.png";
		FWeb.src = "http://www.spacetoast.net/Graphics/unnati/Filter-Web.png";
		FIllustration.src = "http://www.spacetoast.net/Graphics/unnati/Filter-Illustration.png";
	}
}

function RunFilter(forWhich) {
if (forWhich == FilterState) {
	var GraphicType = '.png';
	if (navigator.appName == 'Microsoft Internet Explorer') { GraphicType = '.jpg'; }
	if (forWhich == 'all') {
		document.getElementById('Filter').style.backgroundImage = 'url(http://www.spacetoast.net/Graphics/unnati/Filter-All' + GraphicType + ')';
	}
	if (forWhich == 'IndexLink Filter-Animation') {
		document.getElementById('Filter').style.backgroundImage = 'url(http://www.spacetoast.net/Graphics/unnati/Filter-Animation' + GraphicType + ')';
	}
	if (forWhich == 'IndexLink Filter-Web') {
		document.getElementById('Filter').style.backgroundImage = 'url(http://www.spacetoast.net/Graphics/unnati/Filter-Web' + GraphicType + ')';
	}
	if (forWhich == 'IndexLink Filter-Illustration') {
		document.getElementById('Filter').style.backgroundImage = 'url(http://www.spacetoast.net/Graphics/unnati/Filter-Illustration' + GraphicType + ')';
	}
}
	
	if (! (forWhich) ) {
		forWhich = FilterState;
	}
	
	var x = document.getElementsByTagName('div'); 
	for (var i=0;i<x.length;i++)
	{
		if (x[i].className == 'IndexLink Filter-Animation') {
			if (forWhich == 'all') {
				x[i].style.display = 'block';
			} else {
			if (forWhich == 'IndexLink Filter-Animation') { 
				x[i].style.display = 'block'; 
			} else {x[i].style.display = 'none'; }}
		}
		if (x[i].className == 'IndexLink Filter-Web') {
			if (forWhich == 'all') {
				x[i].style.display = 'block';
			} else {
			if (forWhich == 'IndexLink Filter-Web') { 
				x[i].style.display = 'block'; 
			} else  {x[i].style.display = 'none'; }}
		}
		if (x[i].className == 'IndexLink Filter-Illustration') {
			if (forWhich == 'all') {
				x[i].style.display = 'block';
			} else {
			if (forWhich == 'IndexLink Filter-Illustration') { 
				x[i].style.display = 'block'; 
			} else  {x[i].style.display = 'none'; }}
		}
	}
}