function tup () {
  //cont=document.getElementById("container");
cont=document.getElementsByTagName("body")[0];
  
  if (cont.currentStyle)
		var st = cont.currentStyle;
	else if (window.getComputedStyle)
		var st = document.defaultView.getComputedStyle(cont,"");

curr=st.fontSize;
if(curr=='small') {  // Workaround for IE
	cont.style.fontSize='13px';
	curr='13px';
}
  currv=parseFloat(st.fontSize);
  type=curr.length - (currv + '').length;
  if (type==1) unit="%"; else unit='px';
  cont.style.fontSize=currv*1.2 + unit;
  
  

  }
  
   function treset () {
	 //cont=document.getElementById("container");
cont=document.getElementsByTagName("body")[0]; 
	cont.style.fontSize="small";
   }
  
  function tdown () {
  //cont=document.getElementById("container");
cont=document.getElementsByTagName("body")[0];
  
  if (cont.currentStyle)
		var st = cont.currentStyle;
	else if (window.getComputedStyle)
		var st = document.defaultView.getComputedStyle(cont,"");

curr=st.fontSize;
if(curr=='small') {  // workaround for IE
	cont.style.fontSize='13px';
	curr='13px';
}
  currv=parseFloat(st.fontSize);
  type=curr.length - (currv + '').length;
  if (type==1) unit="%"; else unit='px';
  cont.style.fontSize=currv*0.8 + unit;
  
  

  }