//preload images
navLogin=new Image(); navLogin.src="images/nav_login.gif"
navLoginOver=new Image(); navLoginOver.src="images/nav_login_over.gif"
navAboutus=new Image(); navAboutus.src="images/spacer.gif"
navAboutusOver=new Image(); navAboutusOver.src="images/spacer.gif"
	snavAboutus1=new Image(); snavAboutus1.src="images/spacer.gif"
	snavAboutus1Over=new Image(); snavAboutus1Over.src="images/spacer.gif"
	snavAboutus2=new Image(); snavAboutus2.src="images/spacer.gif"
	snavAboutus2Over=new Image(); snavAboutus2Over.src="images/spacer.gif"
	snavAboutus3=new Image(); snavAboutus3.src="images/spacer.gif"
	snavAboutus3Over=new Image(); snavAboutus3Over.src="images/spacer.gif"
	snavAboutus4=new Image(); snavAboutus4.src="images/spacer.gif"
	snavAboutus4Over=new Image(); snavAboutus4Over.src="images/spacer.gif"
navCareers=new Image(); navCareers.src="images/spacer.gif"
navCareersOver=new Image(); navCareersOver.src="images/spacer.gif"
	snavCareers1=new Image(); snavCareers1.src="images/spacer.gif"
	snavCareers1Over=new Image(); snavCareers1Over.src="images/spacer.gif"
	snavCareers2=new Image(); snavCareers2.src="images/spacer.gif"
	snavCareers2Over=new Image(); snavCareers2Over.src="images/spacer.gif"
navPrint=new Image(); navPrint.src="images/spacer.gif"
navPrintOver=new Image(); navPrintOver.src="images/spacer.gif"
navHome=new Image(); navHome.src="images/spacer.gif"
navHomeOver=new Image(); navHomeOver.src="images/spacer.gif"
navArticles=new Image(); navArticles.src="images/spacer.gif"
navArticlesOver=new Image(); navArticlesOver.src="images/spacer.gif"
navCapabilities=new Image(); navCapabilities.src="images/spacer.gif"
navCapabilitiesOver=new Image(); navCapabilitiesOver.src="images/spacer.gif"
	snavCapabilities1=new Image(); snavCapabilities1.src="images/spacer.gif"
	snavCapabilities1Over=new Image(); snavCapabilities1Over.src="images/spacer.gif"
	snavCapabilities2=new Image(); snavCapabilities2.src="images/spacer.gif"
	snavCapabilities2Over=new Image(); snavCapabilities2Over.src="images/spacer.gif"
	snavCapabilities3=new Image(); snavCapabilities3.src="images/spacer.gif"
	snavCapabilities3Over=new Image(); snavCapabilities3Over.src="images/spacer.gif"
navProjects=new Image(); navProjects.src="images/spacer.gif"
navProjectsOver=new Image(); navProjectsOver.src="images/spacer.gif"
	snavProjects1=new Image(); snavProjects1.src="images/spacer.gif"
	snavProjects1Over=new Image(); snavProjects1Over.src="images/spacer.gif"
	snavProjects2=new Image(); snavProjects2.src="images/spacer.gif"
	snavProjects2Over=new Image(); snavProjects2Over.src="images/spacer.gif"
	snavProjects3=new Image(); snavProjects3.src="images/spacer.gif"
	snavProjects3Over=new Image(); snavProjects3Over.src="images/spacer.gif"

navContactus=new Image(); navContactus.src="images/spacer.gif"
navContactusOver=new Image(); navContactusOver.src="images/spacer.gif"

	// Show Hide Layers
function showHide(layerName,v) {
	if (v == 0) {
		option = 'hidden';}
	else if(v == 1){ 
		option = 'visible';}
	if(document.all) { //for IE 4
		document.all(layerName).style.visibility = option;
		}
	else if (document.getElementById && !document.all) { // for NS6
		document.getElementById(layerName).style.visibility = option
		}
	else if(document.layers) { //for NS 4
		document.layers[layerName].visibility = option
		}
}

	// RollOver Script
function iC(imageID,imageName,imageID2,imageName2) { 
		document.images[imageID].src = eval(imageName + ".src");
	if (imageID2 == null) {return}
	else {document.images[imageID2].src = eval(imageName2 + ".src");}
    }

function popup(which){
	iC(which+"Img","nav"+which+"Over")
	if(which != "Home" && which != "Articles" && which != "Contactus" &&  which != "Login" && which != "Print"){
		showHide("div"+which,1)}}
function popdown(which){
	iC(which+"Img", "nav"+which)
	if(which != "Home" && which != "Articles" && which != "Contactus" && which != "Login" && which != "Print"){
		showHide("div"+which,0)}}