function newsletter()
{
    var div = document.getElementById('subscribe');
    var img = document.getElementById('newsletter_arrow');
    if (div.style.display=='none')
        {
            div.style.display = 'block';
            img.src = "images/white_arrow_vertical.jpg";
        }
        else
        {
            div.style.display = 'none';
            img.src = "images/white_arrow.jpg";
        }
}
var min=8;
var max=18;
function increaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=max) {
         s += 1;
      }
      p[i].style.fontSize = s+"px"
   }
}
function decreaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=min) {
         s -= 1;
      }
      p[i].style.fontSize = s+"px"
   }
}