function confirmEmail() {
  var name=document.getElementById('name');
  var email=document.getElementById('e-mail');
  var emailConfirm=document.getElementById('e-mailConfirm');
  
 if (email.value!=emailConfirm.value) {
    alert("e-mails don't match. Please re-enter");
    email.focus();
    return false;
  } else if (name.value=='') {
    alert('you must enter your name');
    name.focus();
    return false;
  } else if (email.value=='') {
    alert("you must enter an e-mail address");
    email.focus();
    return false;
  }
  return true;
}

function fontChange(change) {
  cookieFontSize=readCookie('fontSize');
  if (cookieFontSize!=null) {
    currFontSize=cookieFontSize;
  } else {
    currFontSize='100%';
  }
  //  alert(currFontSize);
  var rightSide=document.getElementById("content");
  //currFontSize=rightSide.style.fontSize;
  var currFontNum =parseInt(currFontSize);
  if (change=='init') {
    rightSide.style.fontSize=currFontSize;
    rightSide.style.lineHeight=currFontSize;
    //rightSide.style.fontSize='100%';
  }
  if (change=='bigger') {
  //alert(currFontSize);
    biggerFont=currFontNum+5+'%';
    tallerLine=currFontNum+10+'%';
    createCookie('fontSize', biggerFont, 7); 
    rightSide.style.fontSize=biggerFont;
    rightSide.style.lineHeight=tallerLine;
  }
  if (change=='smaller') {
    smallerFont=currFontNum-5+'%';
    createCookie('fontSize', smallerFont, 7); 
    rightSide.style.fontSize=smallerFont;
    rightSide.style.lineHeight=smallerFont;
  }
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  } else {
    var expires = "";
  }
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') {
      c = c.substring(1,c.length);
    }
    if (c.indexOf(nameEQ) == 0) {
      return c.substring(nameEQ.length,c.length);
    }
  }
  return null;
}

function eraseCookie(name) {
  createCookie(name,"",-1);
}