// Script: Change font size //

checkCurrentFontSize();

function ChangeFontSize(iFontSize) {
   try {
      if (iFontSize < 2 && iFontSize > 0) {
         document.body.style.fontSize = "0.8em";
         eraseCookie("FontSizeValue");
         createCookie("FontSizeValue", "1", "30");
      }
      if (iFontSize < 3 && iFontSize > 1) {
         document.body.style.fontSize = "1em";
         eraseCookie("FontSizeValue");
         createCookie("FontSizeValue", "2", "30");
      }
      if (iFontSize < 4 && iFontSize > 2) {
         document.body.style.fontSize = "1.2em";
         eraseCookie("FontSizeValue");
         createCookie("FontSizeValue", "3", "30");
      }
   }
   catch (er) { } 
}

function checkCurrentFontSize() {
   var iFontSize  = parseInt(readCookie("FontSizeValue"));
   if (iFontSize > 0 && iFontSize < 4) {
      ChangeFontSize(iFontSize);
   }
}

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);
}

// Web Script/JavaScript. //