logoon= new Image();
logoon.src="images/logo_ashley_gilbertsonR.gif";
logooff= new Image();
logooff.src="images/logo_ashley_gilbertson.gif";
nav_projectson= new Image();
nav_projectson.src="images/nav_projectsR.gif";
nav_projectsoff= new Image();
nav_projectsoff.src="images/nav_projects.gif";
nav_archiveon= new Image();
nav_archiveon.src="images/nav_archiveR.gif";
nav_archiveoff= new Image();
nav_archiveoff.src="images/nav_archive.gif";
nav_bookon= new Image();
nav_bookon.src="images/nav_bookR.gif";
nav_bookoff= new Image();
nav_bookoff.src="images/nav_book.gif";
nav_exhibitionson= new Image();
nav_exhibitionson.src="images/nav_exhibitionsR.gif";
nav_exhibitionsoff= new Image();
nav_exhibitionsoff.src="images/nav_exhibitions.gif";
nav_presson= new Image();
nav_presson.src="images/nav_pressR.gif";
nav_pressoff= new Image();
nav_pressoff.src="images/nav_press.gif";
nav_abouton= new Image();
nav_abouton.src="images/nav_aboutR.gif";
nav_aboutoff= new Image();
nav_aboutoff.src="images/nav_about.gif";
nav_contacton= new Image();
nav_contacton.src="images/nav_contactR.gif";
nav_contactoff= new Image();
nav_contactoff.src="images/nav_contact.gif";

prevon= new Image();
prevon.src="images/prevR.gif";
prevoff= new Image();
prevoff.src="images/prev.gif";
nexton= new Image();
nexton.src="images/nextR.gif";
nextoff= new Image();
nextoff.src="images/next.gif";
overviewon= new Image();
overviewon.src="images/overviewR.gif";
overviewoff= new Image();
overviewoff.src="images/overview.gif";
captionon= new Image();
captionon.src="images/captionR.gif";
captionoff= new Image();
captionoff.src="images/caption.gif";
contact_sheeton= new Image();
contact_sheeton.src="images/contact_sheetR.gif";
contact_sheetoff= new Image();
contact_sheetoff.src="images/contact_sheet.gif";

function img_act(imgName,PicName)
   {
    document [PicName].src = eval(imgName + ".src");
   }