function lay(id) {
    /**/
    var z = document.documentElement.clientHeight/4;z = Math.floor(z);var h;if(document.documentElement.clientHeight > document.body.offsetHeight){h = document.documentElement.clientHeight;} else {h = document.body.offsetHeight;}if(h == undefined) {h = 2000;}
     
    document.getElementById('box').style.height=h;
    document.getElementById('box').style.display="block";
    document.getElementById(id).style.marginTop=z;
    document.getElementById(id).style.display="block";
}
function layclose(id) {
    document.getElementById(id).style.display="none";
    document.getElementById('box').style.display="none";    
}