function show_this(image_src)
 {
   var fon_div = document.getElementById('map_div');
   var img_tab = document.getElementById('map_tab');
   var 	X = getBodyScrollLeft()+250;
   var	Y = getBodyScrollTop();

   fon_div.style.position = "absolute";
   fon_div.style.left 	  = 0;
   fon_div.style.top  	  = 0;

   fon_div.style.width    = getDocumentWidth();
   fon_div.style.height   = getDocumentHeight();
   fon_div.style.background = '#FFE9CC';
   fon_div.style.opacity    = 0.4;
   fon_div.style.filter     = "progid:DXImageTransform.Microsoft.Alpha(opacity=40)";
   fon_div.style.visibility = "visible";
   fon_div.style.display    = "inline";

   img_tab.style.position = "absolute";
   img_tab.style.left 	  = X;
   img_tab.style.top  	  = Y;
   img_tab.style.background = '#BBBBBB';
   img_tab.style.visibility = "visible";
   img_tab.style.display    = "inline";

   document.getElementById("map_img").src = image_src;
 }

function hide_this()
 {
   var fon_div = document.getElementById('map_div');
   var img_tab = document.getElementById('map_tab');

   fon_div.style.visibility = "hidden";
   fon_div.style.display    = "none";

   img_tab.style.visibility = "hidden";
   img_tab.style.display    = "none";

   document.getElementById("map_img").src = '';
 }