function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
 }

 var logs = createRequestObject();

 function reg(cam)
 {
  logs.open('get', '/logcam/' + cam);
  logs.send(null);

 }

function list_show(cam) {
  document.getElementById('menu'+cam).style.display = 'block';
  document.getElementById('back'+cam).style.display = 'block';
}
function list_hide(cam) {
  document.getElementById('menu'+cam).style.display = 'none';
  document.getElementById('back'+cam).style.display = 'none';
}