// JavaScript Document

function changeClass(en,cn) {
if(!document.getElementById) return;
var element = document.getElementById(en);	
	element.className = cn;
}

function sameHeightForDivs() {  
  
    var cLH = document.getElementById("contentLinks").scrollHeight;
    var cMH = document.getElementById("contentMidden").scrollHeight;
    if(document.getElementById("contentRechts")){
    var cRH = document.getElementById("contentRechts").scrollHeight;
	  }else{
	  var cRH = 0;
	  }
	  
    //alert(cLH + "\n" + cMH + "\n" + cRH);  
      
    if (cLH > cMH && cLH > cRH){

        document.getElementById("contentLinks").style.height = cLH + "px";
        document.getElementById("contentMidden").style.height = cLH + "px";  
        if(document.getElementById("contentRechts")){
        document.getElementById("contentRechts").style.height = cLH + "px";
        }
    }
    if (cMH > cLH && cMH > cRH){

        document.getElementById("contentLinks").style.height = cMH + "px";
        document.getElementById("contentMidden").style.height = cMH + "px";  
        if(document.getElementById("contentRechts")){
        document.getElementById("contentRechts").style.height = cMH + "px";
        }
    }
    if (cRH > cLH && cRH > cMH){

        document.getElementById("contentLinks").style.height = cRH + "px";
        document.getElementById("contentMidden").style.height = cRH + "px";  
        if(document.getElementById("contentRechts")){
        document.getElementById("contentRechts").style.height = cRH + "px";
        }
    }
		
}

function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
       anchor.target = "_blank";
 }
}


window.onload = function(){ 
  sameHeightForDivs()
  externalLinks()
  }