function zoom_picture_left (object_id)
{
 if(document.getElementById(object_id).className=="container_left_small") 
  {document.getElementById(object_id).className="container_left_full";}
 else
  {document.getElementById(object_id).className="container_left_small";}
}

function zoom_picture_right (object_id)
{
 if(document.getElementById(object_id).className=="container_right_small") 
  {document.getElementById(object_id).className="container_right_full";}
 else
  {document.getElementById(object_id).className="container_right_small";}
}

function select_tab (tab_container_id, tab_number)
{
 for (var offset=0; offset<document.getElementById(tab_container_id).getElementsByTagName("div").length; offset++)
 {
   if (offset<document.getElementById(tab_container_id).getElementsByTagName("div").length/2)
   {
     if (offset==tab_number-1) 
      {document.getElementById(tab_container_id).getElementsByTagName("div")[offset].className="currentitem";}
     else
      {document.getElementById(tab_container_id).getElementsByTagName("div")[offset].className="item";}
   } else {
     if (offset==document.getElementById(tab_container_id).getElementsByTagName("div").length/2+tab_number-1) 
      {document.getElementById(tab_container_id).getElementsByTagName("div")[offset].style.display="block";}
     else
      {document.getElementById(tab_container_id).getElementsByTagName("div")[offset].style.display="none";}
   }
 }
}


/* Routine öffnet alle Links zu externen Zielen im neuen Fenster
   unter Berücksichtigung des XHTML-Standards. */
function external_links() {
if (!document.getElementsByTagName) return; 
var document_links = document.getElementsByTagName("a");
  for (var zaehler=0; zaehler<document_links.length; zaehler++) { 
    var document_link = document_links[zaehler]; 
    if (document_link.getAttribute("href")) {
      href_url=document_link.getAttribute("href");
      if ( (href_url.search(/www\./i)!=-1) || (href_url.search(/http:\/\//i)!=-1) ) {
        if (href_url.search(/tagdesrudersports2009\.de/i)!=-1) {}
        else { 
          document_link.target="_blank";
          document_link.title="Externer Link wird in neuem Fenster geöffnet.";
        }
      } 
    } 
  } 
} 
window.onload = external_links;