Browser = false ;
if (((navigator.appName.charAt(0)=="N") && (navigator.appVersion.charAt(0)>=3)) || ((navigator.appName.charAt(0)=="M") && (navigator.appVersion.charAt(0)>=4))) {
    Browser = true;
    
   
    about_off= new Image();
    about_off.src = "images/nav/about_off.gif";
    about_over = new Image();
    about_over.src = "images/nav/about_over.gif";
    
    contact_off= new Image();
    contact_off.src = "images/nav/contact_off.gif";
    contact_over = new Image();
    contact_over.src = "images/nav/contact_over.gif";
    
    publications_off= new Image();
    publications_off.src = "images/nav/publications_off.gif";
    publications_over = new Image();
    publications_over.src = "images/nav/publications_over.gif";
    
    service_off= new Image();
    service_off.src = "images/nav/service_off.gif";
    service_over = new Image();
    service_over.src = "images/nav/service_over.gif";
    
    
    
    
   
    }    

function rollover(place, imgName) {
    if (Browser == true) {
        document[place].src =eval(imgName + ".src");
    }
}


function openWindow(page, attributes){
    
    if(navigator.platform.charAt(0)=="M"){
        var newWidth = 530;
        var newHeight = 510;    
    }else{
        var newWidth = 550;
        var newHeight = 530;
    }
    
    window.open(page, '', "width=" + newWidth +",height=" + newHeight + "," + attributes);
    
}