var display=false;
var obj = '';
var on = '';

function set_off(obj){
    var command = 'hide(\''+obj+'\');';
    if(display==false){
        setTimeout(command,2000);
    }
}
function set_on(obj){

    if(on != obj){
        var hidecom = 'hide(\''+on+'\');';
        setTimeout(hidecom,250);
    }

    on = obj;

    var command = 'show(\''+obj+'\');';
    setTimeout(command,200);

}

function hide(obj){
    if(obj !=''){
        document.getElementById(obj).style.visibility='hidden';
    }
}
function show(obj){
    document.getElementById(obj).style.visibility='visible';
}

function setdisplay(){
    display=true;
}

function hideexp(obj){
    document.getElementById(obj).style.visibility='hidden';
}