var browserOK = false;
var pics;
browserOK = true;
pics = new Array();
var objCount = 0; 
function preload(name, first, second) {
		if (browserOK) {
		pics[objCount] = new Array(0);
		pics[objCount][0] = new Image();
		pics[objCount][0].src = first;
		pics[objCount][1] = new Image();
		pics[objCount][1].src = second;
		pics[objCount][2] = name;
		objCount++;
	}
}

function on(name){
	if (browserOK) {
		for (i = 0; i < objCount; i++) {
			if (document.images[pics[i][2]] != null)
				if (name != pics[i][2]) {
				document.images[pics[i][2]].src = pics[i][0].src;
				} else {
				document.images[pics[i][2]].src = pics[i][1].src;
			}
		}
	}
}

function off(){
	if (browserOK) {
		for (i = 0; i < objCount; i++) {
			if (document.images[pics[i][2]] != null)
				document.images[pics[i][2]].src = pics[i][0].src;
		}
	}
}

preload("home", "../img/navigation/home.gif", "../img/navigation/home_on.gif");
preload("aboutus", "../img/navigation/aboutus.gif", "../img/navigation/aboutus_on.gif");
preload("partners", "../img/navigation/partners.gif", "../img/navigation/partners_on.gif");
preload("data", "../img/navigation/data_services.gif", "../img/navigation/data_services_on.gif");
preload("be_info", "../img/navigation/be_info.gif", "../img/navigation/be_info_on.gif");
preload("we_info", "../img/navigation/we_info.gif", "../img/navigation/we_info_on.gif");
preload("contactus", "../img/navigation/contactus.gif", "../img/navigation/contactus_on.gif");
preload("pda1", "../img/navigation/pda.gif", "../img/navigation/pda_on.gif");
preload("pda2", "../img/navigation/pda.gif", "../img/navigation/pda_on.gif");