Problems with my font size adjustment..

I use JS to give the user the possibility to adjust the font size on a page.

      var min=8;
	   var standard=(readCookie('txtsize')==null)?11:readCookie('txtsize');// edited
      var max=15;

      function increaseFontSize() {
         var p = document.getElementsByTagName('*');
         for(i=0;i<p.length;i++) {
            if(p[i].style.fontSize) {
               var s = parseInt(p[i].style.fontSize.replace("px",""));
            } else {
               var s = 11;
            }
            if(s!=max) {
               s += 1;
            }
            p[i].style.fontSize = s+"px";
         }
          createCookie('txtsize',s);// added
      };
      
      function resetFontSize() {
         var p = document.getElementsByTagName('*');
         for(i=0;i<p.length;i++) {
            p[i].style.fontSize = standard+"px";
         }
      };
      
      function decreaseFontSize() {
         var p = document.getElementsByTagName('*');
         for(i=0;i<p.length;i++) {
            if(p[i].style.fontSize) {
               var s = parseInt(p[i].style.fontSize.replace("px",""));
            } else {
               var s = 11;
            }
            if(s!=min) {
               s -= 1;
            }
            p[i].style.fontSize = s+"px";
         }
          createCookie('txtsize',s);// added
      };


/*
added all below
*/

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;
}

window.onload = resetFontSize

PHP:

This can be viewed here as a demo;
http://dev.sparklingblue.net/demo/fontsize/fontsize.html

The problem;
- The Less and More works as it should

- The Reset is where there is a problem (the Reset-link should ALWAYS set the font size to 11);
If I adjust the font size and then hit refresh, it saves this new font size value to the Reset-function, so now Reset doesnt give the value 11px anymore.
What needs to be changed for this to work?

This is the basic funcionallity I hoped for;
- The bigger/smaller adjusts the font size up or down (works)
- The Reset sets the font size to 11px (wrong)
- Changes made by the bigger/smaller, should be saved to the cookie, and loaded on every page load (works, but saves value to the Reset-link on page-refresh)