function hoverOver(itm, fid) {
    // turn all the other ones off. 
    
    var savedId = $get('ctl00_CPH_ContainerMain_featureId');
    
    if (savedId) {
        if (savedId.value != fid) {
            itms = itm.parentNode.getElementsByTagName('li')
            for (var x = 0; x <=(itms.length -1); x++) {itms.item(x).className = '';}
            itm.className = 'on';
            savedId.value = fid;
        }
    
    }
}