sfHover = function() {
	if (document.getElementById("dropdown")) {
		var sfEls = document.getElementById("dropdown").getElementsByTagName("LI");
		for (var i=0; i<sfEls.length; i++) {
			sfEls[i].onmouseover=function() {
				this.className+=" sfhover dropdown_"+this.id;
			}
			sfEls[i].onmouseout=function() {
				this.className=this.className.replace(new RegExp(" sfhover dropdown_"+this.id+"\\b"), "");
			}
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);

adjustOpacity = function() {
	if (navigator.userAgent.indexOf("Mac") != -1 && $.browser.mozilla) {
		// turn off opacity on menus
		$("#dropdown li ul").addClass("opaque");
		$("#dropdown .submenu_container").addClass("opaque");
	}
}

goToPage = function(input) {
	var location = '';
	if (input == 'industry') {
		location = document.resource_form.industry.value;
	} else if (input == 'product') {
		location = document.resource_form.resource.value;
	} else if (input == 'resource') {
		location = document.resource_form.product.value;
	}
	
	if (location) {
		window.location = location;
	} else {
		return false;
	}
}



function changeClass(item, newclass) {
	var cell = document.getElementById(item);
	cell.className = newclass;
}


var oldswapsrc = new Array();  //required for swap()

function swap(image, on) {
    var img = document.images[image];
	if (on) {
        if (img.src != img.src.replace(/_off/gi, '_over')) {oldswapsrc[image] = img.src;}
		img.src = img.src.replace(/_off/gi, '_over');
	} else {
		if (oldswapsrc[image]) img.src = oldswapsrc[image];
	}
}

function preload() {
	args = preload.arguments;
	var preloaded = new Array();
	for (i=0;i<args.length;i++) {
		preloaded[i] = new Image();
		preloaded[i].src = args[i];
	}
}

$(function() {
	if (navigator.userAgent.indexOf("Mac") != -1 && $.browser.mozilla) {
		// turn off opacity on menus
		$("#dropdown li ul").addClass("opaque");
		$("#dropdown .submenu_container").addClass("opaque");
	}
});