function preloadImages() {
  img_08 = new Image();
  img_08.src = "pics/tab.gif";
  img_09 = new Image();
  img_09.src = "pics/tab_aktiv.gif";
  img_02 = new Image();
  img_02.src = "pics/world/img_world_over_europe.gif";
  img_06 = new Image();
  img_06.src = "pics/world/img_world_over_americas.gif";
  img_03 = new Image();
  img_03.src = "pics/world/img_world_over_asia.gif";
  img_04 = new Image();
  img_04.src = "pics/world/img_world_over_africa.gif";
  img_05 = new Image();
  img_05.src = "pics/world/img_world_over_australia_nz.gif";
  img_07 = new Image();
  img_07.src = "pics/world/img_world_over_usa.gif";
  img_01 = new Image();
  img_01.src = "pics/world/img_world_over_uk_ireland.gif";
}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
}

var formerrormsg="Your Data has been submitted already."

function checksubmit(submitbtn){
submitbtn.form.submit()
checksubmit=blocksubmit
return false
}

function blocksubmit(){
if (typeof formerrormsg!="undefined")
alert(formerrormsg)
return false
}


function externalLinks()
{

var thispagedomain = ExtractDomainName(document.URL);
for(var i = 0; i <= document.links.length - 1; i++) {
   var url = document.links[i].href.toLowerCase();
   if(url.indexOf('http://') != 0) { continue; }
   var hrefdomain = ExtractDomainName(url);
   if(thispagedomain != hrefdomain) { 
      document.links[i].target = '_blank';
      }
   }
}

function ExtractDomainName(s) {
var i = s.indexOf('//');
if(i > -1) { s = s.substr(i+2); }
i = s.indexOf('/');
if(i > -1) { s = s.substr(0,i); }
i = s.indexOf(':');
if(i > -1) { s = s.substr(0,i); }
var re = /[a-z]/i;
if(! re.test(s)) { return s; }
var a = s.split('.');
if(a.length < 2) { return s; }
var domain = a[a.length-2] + '.' + a[a.length-1];
if(a.length > 2) {
   if(a[a.length-2].length==2 && a[a.length-1].length==2) {
      domain = a[a.length-3] + '.' + domain;
      }
   }
return domain.toLowerCase();
}

function changecss(myclass,element,value) {
  var CSSRules
  if (document.all) {
    CSSRules = 'rules'
  }
  else if (document.getElementById) {
    CSSRules = 'cssRules'
  }
  for (var i = 0; i < document.styleSheets[0][CSSRules].length; i++) {
    if (document.styleSheets[0][CSSRules][i].selectorText == myclass) {
      document.styleSheets[0][CSSRules][i].style[element] = value
    }
  }	
}


window.onload = externalLinks;