//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 = 1;

function ts( trgt,inc ) 
{
	if (!document.getElementById)
		return;
		
	var d = document;
	var cEl = null;
	var sz = startSz;
	var i = 0;
	var j = 0;
	var cTags = "";

	sz += inc;
	if ( sz < 0.5 ) sz = 0.5;
	if ( sz > 2 ) sz = 2;
	startSz = sz;
	
	// determine if it's a specific element OR a tag element(s)
	if(!(cEl = $("#"+trgt)))
		cEl = d.getElementsByTagName( trgt )[ 0 ];
	
	cEl.css("font-size", startSz+"em");
	
	/*for (i = 0; i < tgs.length; i++) 
	{
		cTags = $( tgs[i] );
		for (j = 0; j < cTags.length; j++)
			$(cTags[j]).css("font-size", startSz+"em");
	}*/
}