// JavaScript Document

//Specify affected tags. Add or remove from list:
var tgs = new Array( 'p', 'li', 'ol', 'label');

//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 > 5 ) return;
	if (inc == 0 ) sz = 2;
	if ( sz < -1 ) return;
	
	    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 ];}
	}	
}