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

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