//MANEJO DE TIPOGRAFIA (AGRANDAR / ACHICAR) 

//tags afectados:
var tgs = new Array('span','p','li','font','a','td','div');

//tamaņos:
var szs = new Array( '10','11','12','14','16' );
var startSz = 0;

function ts(trgt,inc ) {
var obj=window.document;
	if (!obj.getElementById) return
	var d = obj,cEl = null,sz = startSz,i,j,cTags;
	
	sz += inc;
	if ( sz < 0 ) sz = 0;
	if ( sz > 4 ) sz = 4;
	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 ];
	}
}
//fin