var isNetscape = (navigator.appName == "Netscape");
var isMacIE = ( (navigator.userAgent.indexOf("IE 4")  > -1) && (navigator.userAgent.indexOf("Mac")  > -1) );
var layerRef = (isNetscape) ? "document" : "document.all";
var styleRef = (isNetscape) ? "" : ".style";
var DHTML_Enabled = ( (document.layers || document.all) && !isMacIE );

function Faq_mes(ss)
{
	mes="Before sending messages to this forum \nor Voronezh Center, please see \nthe FAQ page and browse \nthe website and forum. \n\nProceed?";
	return (confirm(mes));
}

function Pre(ss)
{
  ims = new Array(10);
  ims[1] = new Image();
  ims[1].src = ss+"/eng/images/but1_b.gif";
  ims[2] = new Image();
  ims[2].src = ss+"/eng/images/but2_b.gif";
  ims[3] = new Image();
  ims[3].src = ss+"/eng/images/but3_b.gif";
  ims[4] = new Image();
  ims[4].src = ss+"/eng/images/but4_b.gif";
  ims[5] = new Image();  
  ims[5].src = ss+"/eng/images/but5_b.gif";
  ims[6] = new Image();
  ims[6].src = ss+"/eng/images/but6_b.gif";
  ims[7] = new Image();
  ims[7].src = ss+"/eng/images/but7_b.gif";
  ims[8] = new Image();
  ims[8].src = ss+"/eng/images/but8_b.gif";
  ims[9] = new Image();
  ims[9].src = ss+"/eng/images/but9_b.gif";
}

function Over(num)
  {  
    var s;
    var ii;
    s=document.images[num].src;
    ii=s.indexOf("_a.gif")+s.indexOf("_b.gif");
    if (ii<0){
      ii=s.indexOf(".gif");
      s=s.substring(0,ii);
       s=s+"_b.gif"; 
      document.images[num].src=s;
    }
  }

function Out(num)
  {  
    var s;
    var ii;
    s=document.images[num].src;
    ii=s.indexOf("_a.gif");
    if (ii<0){
      ii=s.indexOf("_b.gif");
      if (ii>=0){
        s=s.substring(0,ii);
        s=s+".gif"; 
        document.images[num].src=s;
      }
    }
  }

function MenuCall(Content, Width, BackgrColor, MenuNumber) 
  {
      MenuID=MenuNumber;
      WidthMenu=Width;
      Color=BackgrColor;

      if (DHTML_Enabled) 
      {
          if (isNetscape) 
          { 
             document.write("<LAYER  class=menu   bgcolor="+Color+"  width="+WidthMenu+"  visibility=hidden  id="+MenuID+"   onMouseover=\"MenuActivate('"+MenuID+"')\" onMouseOut=\"MenuKill('"+MenuID+"')\">"+Content+"</LAYER>");	
          } 
          else 
          {  
             document.write("<DIV class=menu id="+MenuID+"  STYLE=\" padding:2pt; position:absolute; visibility:hidden; background:"+Color+"\"  onMouseover=\"MenuActivate('"+MenuID+"')\" onMouseOut=\"MenuKill('"+MenuID+"')\">"+Content+"</DIV>");
             eval(layerRef + '["'+MenuID+'"]'+ styleRef + '.width ='+WidthMenu);
	        }
      }
  }

function MenuActivate(MenuNumber) 
  {
         MenuID=MenuNumber;
         Over(MenuID+"im");
         if (DHTML_Enabled) 
            { 
               if (isNetscape) 
                  { 
                      MenuIDPlace=MenuID+"Place"
                      MenuIDPicture=MenuID+"Picture"
                      // alert ( "MenuIDPicture="+MenuIDPicture)
                      CoordX=document.anchors[MenuIDPlace].x;
                      CoordY=document.anchors[MenuIDPlace].y+document.images[MenuIDPicture].height ;
                      eval(layerRef + '["'+MenuID+'"]' + styleRef + '.top = '+CoordY);
                      eval(layerRef + '["'+MenuID+'"]' + styleRef + '.left = '+CoordX);
                      eval(layerRef + '["'+MenuID+'"]' + styleRef + '.visibility = "visible"');                     
                                   
                  } 
               else 
                  {
                      eval(layerRef + '["'+MenuID+'"]' + styleRef + '.visibility = "visible"');
                  }
        }
   }
function MenuKill(MenuNumber) 
   { 
      MenuID=MenuNumber;
      Out(MenuID+"im");
      if (DHTML_Enabled) 
      {
            eval(layerRef + '["'+MenuID+'"]' + styleRef + '.visibility = "hidden"');
 		  }
   }