var nav_html;
nav_html ="<a href=calendar.html> <img border=0px src=img/calendar_btn.png /> </a>";
nav_html+="<a href=videos.html> <img border=0px src=img/videos_btn.png /> </a>";
nav_html+="<a href=photos.html> <img border=0px src=img/photos_btn.png /> </a>";
nav_html+="<a href=press.html> <img border=0px src=img/press_btn.png /> </a>";
nav_html+="<a href=bio.html> <img border=0px src=img/bio_btn.png /> </a>";
nav_html+="<a href=news.html> <img border=0px src=img/news_btn.png /> </a>";
nav_html+="<a href=contact.html> <img border=0px src=img/contact_btn.png /> </a>";

document.getElementById("nav_menu").innerHTML=nav_html;