function resizeText(multiplier) {
  if(document.body.style.fontSize == "") {
    document.body.style.fontSize = "1.0em";
  }
  document.body.style.fontSize = parseFloat(document.body.style.fontSize) + (multiplier * 0.2) + "em";
  setCookie("fontSize", document.body.style.fontSize, 365);
}	

function setDefaultFontSize(){
  var fontSize = getCookie("fontSize");
  if(fontSize){
    document.body.style.fontSize = parseFloat(fontSize) + "em";
  }
}

function setCookie(c_name,value,expiredays){
  var exdate=new Date();
  exdate.setDate(exdate.getDate()+expiredays);
  document.cookie=c_name+ "=" +escape(value)+ ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function getCookie(c_name){
  if(document.cookie.length>0){
    c_start=document.cookie.indexOf(c_name + "=");
    if(c_start!=-1){ 
      c_start=c_start + c_name.length+1;
      c_end=document.cookie.indexOf(";",c_start);
      if(c_end==-1) c_end=document.cookie.length;
      return unescape(document.cookie.substring(c_start,c_end));
    }
  }
  return false;
}