if (document.images) {

var nav_homeA = new Image()
nav_homeA.src = "images/nav_home_off.gif"
var nav_homeZ = new Image()
nav_homeZ.src = "images/nav_home_on.gif"

var nav_overviewA = new Image()
nav_overviewA.src = "images/nav_overview_off.gif"
var nav_overviewZ = new Image()
nav_overviewZ.src = "images/nav_overview_on.gif"

var nav_newsA = new Image()
nav_newsA.src = "images/nav_news_off.gif"
var nav_newsZ = new Image()
nav_newsZ.src = "images/nav_news_on.gif"

var nav_projectsA = new Image()
nav_projectsA.src = "images/nav_projects_off.gif"
var nav_projectsZ = new Image()
nav_projectsZ.src = "images/nav_projects_on.gif"

var nav_plansA = new Image()
nav_plansA.src = "images/nav_plans_off.gif"
var nav_plansZ = new Image()
nav_plansZ.src = "images/nav_plans_on.gif"

var nav_grantsA = new Image()
nav_grantsA.src = "images/nav_grants_off.gif"
var nav_grantsZ = new Image()
nav_grantsZ.src = "images/nav_grants_on.gif"

var nav_meetingsA = new Image()
nav_meetingsA.src = "images/nav_meetings_off.gif"
var nav_meetingsZ = new Image()
nav_meetingsZ.src = "images/nav_meetings_on.gif"

var nav_contactA = new Image()
nav_contactA.src = "images/nav_contact_off.gif"
var nav_contactZ = new Image()
nav_contactZ.src = "images/nav_contact_on.gif"

}
function act(imgName) {
if (document.images)
document[imgName].src = eval(imgName + 'Z.src')
}

function inact(imgName) {
if (document.images)
document[imgName].src = eval(imgName + 'A.src')
}


function popup(url) {
var msgWindow=open(url,'viewclip','toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=1,resizable=0,width=720,height=600');
msgWindow.opener = this.window;
}