function isValidationOK()
    {
       form = document.BDRequest;

       if(form.userName.value == "")
       {
          alert("Имя обязательно для ввода.");
          form.userName.focus();
          return false;
       }
       else
       if(form.address.value == '')
       {
          alert("Страна и город обязательны для ввода.");
          form.address.focus();
          return false;
       }
       else
       if(form.email.value == "")
       {
          alert("E-mail нужно указывать обязательно.");
          form.email.focus();
          return false;
       }
       else
       {
          return true;
       }
    }

    function sendRequest()
    {
       form = document.BDRequest;
       if(isValidationOK())
       {
          form.submit();
       }
    }


 // tooltip section

     if (!document.layers&&!document.all&&!document.getElementById)
    event="test"

    function showtip(current,e,text)
    {
        if (document.all||document.getElementById)
        {
            thetitle=text.split('<br>')
            if (thetitle.length>1)
            {
                thetitles=''
                for (i=0;i<thetitle.length;i++)
                thetitles+=thetitle[i]
                current.title=thetitles
            }
            else
            current.title=text
        }
        else if (document.layers)
        {
            document.tooltip.document.write('<layer bgColor="white" style="border:1px solid black;v-size:12px;">'+text+'</layer>')
            document.tooltip.document.close()
            document.tooltip.left=e.pageX+5
            document.tooltip.top=e.pageY+5
            document.tooltip.visibility="show"
        }
    }


    function hidetip()
    {
        if (document.layers)
        document.tooltip.visibility="hidden"
    }