function get_elem(el)
{
    return document.getElementById(el);
}

function strpos(haystack,needle,offset)  {var i=(haystack+'').indexOf(needle,offset); return i===-1 ? false : i;}

function get_browser() {
    var  browser_agent = navigator.userAgent;
    if        (strpos(browser_agent,"fox/2"))  return "firefox_2";
    else if   (strpos(browser_agent,"fox/3"))  return "firefox_3";
    else if   (strpos(browser_agent,"pera"))   return "opera";
    else if   (strpos(browser_agent,"MSIE 6")) return "ie_6";
    else if   (strpos(browser_agent,"MSIE"))   return "ie";
    else if   (strpos(browser_agent,"hrome"))  return "google_chrome";
    else if   (strpos(browser_agent,"afari"))  return "safari";
    else                                       return browser_agent;
}

function link(str)
{
  return top.location.href=str;
}

function get_elem_height(el)
{
    return document.getElementById(el).clientHeight;
}

function getBodyHeight()
{
    return document.body.offsetHeight;
}

function content_right_bg()
{
    ch = get_elem_height('content');
    brName = get_browser();
    if (brName == 'opera')
    {
        if (ch)  {get_elem('content_right_bg').style.height = ch-748+'px';}
        //if (ch)  {get_elem('content_right_bg').style.height = '100%';}
    }
    else
    {
        if (ch)  {get_elem('content_right_bg').style.height = ch-748+'px';}
    }
}



function h_right_bg()
{
    ch = get_elem_height('content');
    if (ch)
    {
       get_elem('content_right_bg').style.height = ch-748+'px';
    }
}

function add_comments_toggle()
{
  varpos = get_elem('addc_form').style.display;
  if (varpos!='none')
  {
     get_elem('addc_form').style.display='none';
  }
  else
  {
     get_elem('addc_form').style.display='block';

  }
}



function load_js_1()
{
    brName = get_browser();
    if (brName == 'ie_6')
    {
       get_elem('core_main').style.height='100%';
       window.attachEvent("onload", correctPNG);
       document.body.style.overflowX='hidden';
    }
}


function load_js_2()
{
      brName = get_browser();
      if (brName == 'ie_6' || brName == 'ie')
      {
         get_elem('content_bg_bottom').className='content_bg_bottom_ie';
         get_elem('footer_flower').className='footer_flower_ie';
      }
      else if (brName == 'google_chrome' || brName == 'safari')
      {
         get_elem('content_bg_bottom').className='content_bg_bottom_sf';
         get_elem('footer_flower').className='footer_flower_sf';
      }
      else
      {
         get_elem('content_bg_bottom').className='content_bg_bottom';
         get_elem('footer_flower').className='footer_flower';
      }
}