function nav1_in()
  {
	  document.nav1.src="images/nav_eye.png";
  }
function nav1_out()
  {
	  document.nav1.src="images/nav_home.png";
  }
function nav2_in()
  {
	  document.nav2.src="images/nav_light.png";
  }
function nav2_out()
  {
	  document.nav2.src="images/nav_about.png";
  }
function nav3_in()
  {
	  document.nav3.src="images/nav_guitar.png";
  }
function nav3_out()
  {
	  document.nav3.src="images/nav_music.png";
  }
function nav4_in()
  {
	  document.nav4.src="images/nav_lightning.png";
  }
function nav4_out()
  {
	  document.nav4.src="images/nav_news.png";
  }
function nav5_in()
  {
	  document.nav5.src="images/nav_star.png";
  }
function nav5_out()
  {
	  document.nav5.src="images/nav_contact.png";
  }
function nav6_in()
  {
	  document.nav6.src="images/nav_planet.png";
  }
function nav6_out()
  {
	  document.nav6.src="images/nav_media.png";
  }
function nav7_in()
  {
	  document.nav7.src="images/nav_peace.png";
  }
function nav7_out()
  {
	  document.nav7.src="images/nav_links.png";
  }
function nav8_in()
  {
	  document.nav8.src="images/nav_leaf.png";
  }
function nav8_out()
  {
	  document.nav8.src="images/nav_calendar.png";
  }