// START ROLLOVER ACTION

// create and load all toolbar button Image objects
// each button has three states: unlit, lit, and selected

img_history        = new Image(68, 21);     // unlit button
img_history.src    = "images/history.gif";
img_historylit     = new Image(68, 21);     // lit button
img_historylit.src = "images/historyon.gif";

img_news        	 = new Image(60, 21);     // unlit button
img_news.src    	 = "images/news.gif";
img_newslit     	 = new Image(60, 21);     // lit button
img_newslit.src 	 = "images/newson.gif";

img_publications         = new Image(107, 21);     // unlit button
img_publications.src     = "images/publications.gif";
img_publicationslit      = new Image(107, 21);     // lit button
img_publicationslit.src  = "images/publicationson.gif";

img_about          = new Image(118, 21);     // unlit button
img_about.src      = "images/about.gif";
img_aboutlit       = new Image(118, 21);     // lit button
img_aboutlit.src   = "images/abouton.gif";

img_join        	 = new Image(107, 21);     // unlit button
img_join.src    	 = "images/join.gif";
img_joinlit     	 = new Image(107, 21);     // lit button
img_joinlit.src 	 = "images/joinon.gif";

img_contact        	 = new Image(130, 21);     // unlit button
img_contact.src    	 = "images/contact.gif";
img_contactlit     	 = new Image(130, 21);     // lit button
img_contactlit.src 	 = "images/contacton.gif";

function toggleImage(imageToToggle, imageToDisplay)  // toggle rollover images
  // imageToToggle  - from IMG tag NAME attribute
  // imageToDisplay - from new Image() above
  {
  imageToToggle.src = imageToDisplay.src;  // toggle icon
  }

// end functions