//precache arrow & trans
var arrowImg = new Image(5, 11)
arrowImg.src = "/images/arrow_red.gif"
var clearImg = new Image(5, 11)
clearImg.src = "/images/pixel.gif"

 numImages = 30;
/*rpiImages = new Array((numImages*2))
for(i = 100; i <= 23; i++) {
	rpiImages[i] = new Image();
	rpiImages[i+numImages] = new Image();
	rpiImages[i].src = "/images/but"+i+"rest.gif";
	rpiImages[i+numImages].src = "/images/but"+i+"over.gif";
}
for(i = 24; i <= 30; i++) {
	rpiImages[i] = new Image();
	rpiImages[i+numImages] = new Image();
	rpiImages[i].src = "/images/but"+i+"rest.jpg";
	rpiImages[i+numImages].src = "/images/but"+i+"over.jpg";
} */

function on_image(loc, img) {
                img+=numImages;
                if (typeof document.images[loc] != "undefined") {
					document.images[loc].src=rpiImages[img].src;
				}
}
function off_image(loc, img) {
				if (typeof document.images[loc] != "undefined") {
					document.images[loc].src=rpiImages[img].src;
				}
}

function loaded() {
	if (document.layer) {
	}
}
if (document.images) {
	  logo1 = new Image();
	  logo1.src = "/images/image_top_logo1.gif";

	  logo2 = new Image();
	  logo2.src = "/images/image_top_logo2.gif";
}
function showDiv(divName) {
	hideDiv();
	imageOff();
/* 	document.images[divName].src = "/images/" + divName + "over.gif" */
	var theDiv=divName + "menu";
	if (document.getElementById) {
		document.getElementById(theDiv).style.visibility = "visible";
	} else if (document.all) {
		document.all[theDiv].style.visibility = "visible";
	} else if (document.layers) {
		document[theDiv].visibility = "visible";
	}
}
function imageOff() {
/* 	document.aboutus.src = "/images/aboutusrest.gif";
	document.applications.src = "/images/applicationsrest.gif";
	document.products.src = "/images/productsrest.gif";
	document.casestudies.src = "/images/casestudiesrest.gif";
	document.salesoffice.src = "/images/salesofficerest.gif";
	document.ad.src = "/images/adrest.gif";
	document.contactus.src = "/images/contactusrest.gif"; */
}
function hideDiv() {
	if (document.getElementById) {
		document.getElementById("aboutusmenu").style.visibility = "hidden";
		document.getElementById("applicationsmenu").style.visibility = "hidden";
		document.getElementById("productsmenu").style.visibility = "hidden";
		document.getElementById("casestudiesmenu").style.visibility = "hidden";
		document.getElementById("admenu").style.visibility = "hidden";
	} else if (document.all) {
		document.all.aboutusmenu.style.visibility = "hidden";
		document.all.applicationsmenu.style.visibility = "hidden";
		document.all.productsmenu.style.visibility = "hidden";
		document.all.casestudiesmenu.style.visibility = "hidden";
		document.all.admenu.style.visibility = "hidden";
	} else if (document.layers) {
		document.aboutusmenu.visibility = "hidden";
		document.applicationsmenu.visibility = "hidden";
		document.productsmenu.visibility = "hidden";
		document.casestudiesmenu.visibility = "hidden";
		document.admenu.visibility = "hidden";
	}
}
var iRandApp = -1;
var aryApps = new Array();
aryApps[1] = 'health';
aryApps[2] = 'library';
aryApps[3] = 'business';
aryApps[4] = 'museum';
aryApps[5] = 'justice';
aryApps[6] = 'govern';
aryApps[7] = 'industrial';


function GetRandomNumber() {
	var ri = Math.random();
	ri = Math.round(ri * 7);
	if ( ri < 1 ) {
		ri = 1;
	}
	return ri;
}

function ShowRandomApp() {
	var iLastApp;
	iLastApp = GetCookie('random_app');
	iRandApp = GetRandomNumber();

	//while (iRandApp == iLastApp) {
	//	iRandApp = GetRandomNumber();
	//}

	//SetCookie('random_app', iRandApp);

	on_image(aryApps[iRandApp], iRandApp + 16);
	on_image('app_viewer_pic', iRandApp + 23);

	//17-23, 24-30
}
function HideRandomApp() {
	if (iRandApp > 0) {
		off_image(aryApps[iRandApp], iRandApp + 16);
	}
}

function SetCookie(sName, sValue) {
	document.cookie = sName + "=" + escape(sValue) + "; expires=Mon, 31 Dec 2999 23:59:59 UTC;";
}
function GetCookie(sName) {
	var aCookie = document.cookie.split("; ");
	for (var i=0; i < aCookie.length; i++) {
		var aCrumb = aCookie[i].split("=");
		if (sName == aCrumb[0]) {
			return unescape(aCrumb[1]);
		}
	}
	return null;
}