if (document.images){
	button1off=new Image(193,34);
		button1off.src="img/nav/services_off.jpg";
	button1on=new Image(193,34);
		button1on.src="img/nav/services_over.jpg";
	button2off=new Image(193,34);
		button2off.src="img/nav/about_off.jpg";
	button2on=new Image(193,34);
		button2on.src="img/nav/about_over.jpg";
	button3off=new Image(193,34);
		button3off.src="img/nav/clients_off.jpg";
	button3on=new Image(193,34);
		button3on.src="img/nav/clients_over.jpg";
	button4off=new Image(193,34);
		button4off.src="img/nav/contact_off.jpg";
	button4on=new Image(193,34);
		button4on.src="img/nav/contact_over.jpg";
	button5off=new Image(193,26);
		button5off.src="img/nav/download-brochure-off.gif";
	button5on=new Image(193,26);
		button5on.src="img/nav/download-brochure-on.gif";
	button9off=new Image(193,26);
		button9off.src="img/nav/q1-sample-off.jpg";
	button9on=new Image(193,26);
		button9on.src="img/nav/q1-sample-on.jpg";
	button10off=new Image(193,26);
		button10off.src="img/nav/q2-sample-off.jpg";
	button10on=new Image(193,26);
		button10on.src="img/nav/q2-sample-on.jpg";
	button11off=new Image(193,34);
		button11off.src="img/nav/downloads_off.jpg";
	button11on=new Image(193,34);
		button11on.src="img/nav/downloads_over.jpg";
}