function pageLoad(){
    initMenus();
    if(window.document._focusField)
        window.document._focusField.focus();   
}
var initialised=false;
var initialising=false;
function initMenus(){
    if(!initialised
    && !initialising){
        initialising=true;
	initialiseDivs();
	initialiseMouse();
        initialised=true;
    }
    return initialised;
}  

function setFocus(field){
    window.document._focusField = field;    
}

function popup(divName){
        if(initMenus()){
            var popupDiv = eval('divs.'+divName);
            popupDiv.show();
        }
}
function popdown(divName){
    
        if(initMenus()){
            var popupDiv = eval('divs.'+divName);
            popupDiv.hide();
        }
}