// JavaScript Document
function calcDiv()
{
  var cth=0;
  var minHeight=480;
  cth=document.getElementById("textpart").offsetHeight;

  if(cth<=minHeight){
	  document.getElementById("textpart").style.height=minHeight+"px";
  } else if(cth>minHeight){
	  document.getElementById("textpart").style.height=cth+20+"px";
  }
  
  midHeight=document.getElementById("textpart").offsetHeight;
  
  document.getElementById("textbody").style.height=midHeight+"px";
  document.getElementById("middle").style.height=midHeight+"px";
  document.getElementById("navigation").style.height=midHeight+"px";
  document.getElementById("ringlock").style.height=midHeight+"px";
  document.getElementById("rightborder").style.height=midHeight+"px";
  
  topFooter=document.getElementById("middle").offsetHeight+document.getElementById("header").offsetHeight;
  document.getElementById("footer").style.top=topFooter-6+"px";
  document.getElementById("footer").style.visibility="visible";
}