function over(divid) {
	document.getElementById(divid).style.backgroundImage = "url('images/menu_over.png')";
}

function out(divid) {
	document.getElementById(divid).style.backgroundImage = "url('images/menu_back.png')";
}

function load(divid) {
	document.getElementById(divid).style.backgroundImage = "url('images/menu_click.png')";
	if (divid == "opt1") {
		window.location.href = "default.htm";
	}
	else if (divid == "opt2") {
		window.location.href = "vision.htm";
	}
	else if (divid == "opt3") {
		window.location.href = "clients.htm";
	}
	else if (divid == "opt4") {
		window.location.href = "knowledge.htm";
	}
	else if (divid == "opt5") {
		window.location.href = "http://trembirthdesign.blogspot.com/";
	}
	else if (divid == "opt6") {
		window.location.href = "contacts.htm";
	}
}