//Specify affected tags. Add or remove from list:
var tgs = new Array( 'div','td','tr');

//Specify spectrum of different font sizes:
var szs = new Array( 'xx-small','x-small','small','medium','large','x-large','xx-large' );
var startSz = 2;

// text size
function ts( trgt,inc,dec ) {
  if (!document.getElementById) return
  var d = document,cEl = null,sz = startSz,i,j,cTags;

  if(inc>0)
    sz = sz + inc;
  else
    sz = sz - dec;

  if ( sz < 0 ) sz = 0;
  if ( sz > 6 ) sz = 6;
  startSz = sz;

  if (!( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ];

  cEl.style.fontSize = szs[ startSz ];

    createCookie("textsizestyle", sz , 365);

  for ( i = 0 ; i < tgs.length ; i++ ) {
    cTags = cEl.getElementsByTagName( tgs[ i ] );

    for ( j = 0 ; j < cTags.length ; j++ ) cTags[ j ].style.fontSize = szs[ sz ];
  }
} 


// text size in pixels
function tsp( trgt,newsz) {

  if (!document.getElementById) return
  var d = document,cEl = null,sz = startSz,i,j,cTags;

  sz = newsz;

  if ( sz < 0 ) sz = 0;
  if ( sz > 6 ) sz = 6;
  startSz = sz;


  if (!( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ];

  cEl.style.fontSize = szs[ sz ];

  for ( i = 0 ; i < tgs.length ; i++ ) {
    cTags = cEl.getElementsByTagName( tgs[ i ] );

    for ( j = 0 ; j < cTags.length ; j++ ) cTags[ j ].style.fontSize = szs[ sz ];
  }

}




















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 fsize(size,unit,id){
  var vfontsize = document.getElementById(id);
  if(vfontsize){
    vfontsize.style.fontSize = size + unit;
    createCookie("textsizestyle", textsize, 365);
  }
}

var textsize = 10;
function changetextsize(up){
  if(up){
   textsize = parseFloat(textsize)+2;
  }else{
   textsize =parseFloat(textsize)-2;
  }
}
*/