var browser = navigator.appVersion.toLowerCase();
var ie_version = 0;
if (browser.indexOf("msie") != -1) {
   ie_version = parseFloat(browser.split("msie")[1]);
}

function showobject(id,height,width,text) {

   window_top = (document.body.clientHeight - height) / 2;
   window_left = (document.body.clientWidth - width) / 2;
   if ((ie_version < 7) && (ie_version != 0) && (document.getElementById('id_iframe') == null)) {
      var iframe = document.createElement('iframe');
      iframe.id = "id_iframe";
      iframe.src = "../blank.html";
      iframe.frameborder = 1;
      iframe.scrolling = "no";
      iframe.style.position = "absolute";
      iframe.style.background = "#FFFFFF";
      iframe.style.left = window_left;
      iframe.style.top = window_top;
      iframe.style.height = height;
      iframe.style.width = width;
      iframe.style.zIndex = 10;
      //iframe.style.filter = "alpha(opacity=50)";
      //iframe.style.opacity = 50;
      document.body.appendChild(iframe);
      iframe.style.display = "block";
   }
   if (document.getElementById(id) == null) {
      var div = document.createElement('div');
      div.id = id;
      div.style.left = window_left;
      div.style.top = window_top;
      div.style.height = height;
      div.style.width = width;
      if (!text == '') div.innerHTML = text;
      div.style.position = "absolute"
      div.style.display = "block";
      div.style.zIndex = 11;
      document.body.appendChild(div);
   }
}

function hideobject(id) {
   if (document.getElementById(id) != null) {
      var div = document.getElementById(id);
      div.style.display = "none";
   }
   if ((ie_version < 7) && (ie_version != 0) && (document.getElementById('id_iframe') != null)) {
      document.getElementById('id_iframe').style.display = "none";
   }
}