function menu( btn_click )
{
	switch( btn_click )
	{
		//home button
		case "home0" : window.location= "about.php"; break; //main button
		
		//company buttons
		case "company0" : window.location= "about.php"; break; //main button
		case "company1" : window.location= "about.php"; break; //about us
		case "company2" : window.location= "mission.php"; break; //mission statement
		case "company3" : window.location= "management.php"; break; //management
		case "company4" : window.location= "directors.php"; break; //directors

		//products buttons
		case "products0" : window.location= "technology.php"; break; //main button
		case "products1" : window.location= "technology.php"; break; //technology
		case "products2" : window.location= "results.php"; break; //test results
		case "products3" : window.location= "3d.php"; break; //3D images
		case "products4" : window.location= "gallery.php"; break; //gallery
		case "products4" : window.location= "faq.php"; break; //faq

		//investors buttons
		case "investors0" : window.location= "ifaq.php"; break; //main button
		case "investors1" : window.location= "about.php"; break; //corporate profile
		case "investors2" : window.location= "http://yahoo.brand.edgar-online.com/default.aspx?cik=1284454"; break; //securities filing
		case "investors3" : window.location= "http://finance.yahoo.com/q?s=EVCC.OB"; break; //stock quote
		case "investors4" : window.location= "ifaq.php"; break; //investor faqs
		case "investors5" : window.location= "contactir.php"; break; //contact us
		
		//newsroom buttons
		case "newsroom0" : window.location= "news.php"; break; //main button
		case "newsroom1" : window.location= "news.php"; break; //press releases
		case "newsroom2" : window.location= "video.php"; break; //videos
		case "newsroom3" : window.location= "articles.php"; break; //related articles
		case "newsroom4" : window.location= "resources.php"; break; //external resources
		
		//careers button
		case "careers0" : window.location= "careers.php"; break; //main button
		
		//contact button
		case "contact0" : window.location= "contact.php"; break; //main button		
	}
	
}