// JavaScript Document

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

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

function ts( trgt,inc ) {
  if (!document.getElementById) return
  	var d = document,cEl = null,sz = startSz,i,j,cTags;
  	sz += inc;
  	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 ];
  }
}