if (document.images) {
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         philosophyA.src = "images/nav_philosophy_off.gif"
         var philosophyZ = new Image()
         philosophyZ.src = "images/nav_philosophy_on.gif"
         
         var historyA = new Image()
         historyA.src = "images/nav_history_off.gif"
         var historyZ = new Image()
         historyZ.src = "images/nav_history_on.gif"
         
         var teamA = new Image()
         teamA.src = "images/nav_team_off.gif"
         var teamZ = new Image()
         teamZ.src = "images/nav_team_on.gif"
         
         var projectsA = new Image()
         projectsA.src = "images/nav_projects_off.gif"
         var projectsZ = new Image()
         projectsZ.src = "images/nav_projects_on.gif"
         
         var contactA = new Image()
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         var homeA = new Image()
         homeA.src = "images/nav_home_off.gif"
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}

function act(imgName) {
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}

function inact(imgName) {
         if (document.images)
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}