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

//Specify spectrum of different font sizes:
/*var szs = new Array( 'xx-small','x-small','small','medium','large','x-large','xx-large' );*/
var szs = new Array( '8px', '9px','10px','11px','12px','13px','14px','16px','17px','18px','19px','20px');
var startSz = 4;

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 > szs.length ) sz = szs.length;
	startSz = sz;
		
	if ( !( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ];
	if (sz>6) {
		document.getElementById("menu01").className="menu01c";
		document.getElementById("menu02").className="menu02b";
		document.getElementById("main02").className="main02b";
	}
	else {
		document.getElementById("menu01").className="menu01";
		document.getElementById("menu02").className="menu02";
		document.getElementById("main02").className="main02";
	}

	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 ];
	}

	/* Cas particulier class "titre03" */
	var reg=new RegExp("[px]+", "g");
	var size1=16+Math.round(szs[sz].replace(reg,""));
	var size2=size1+"px";
	if (document.getElementById("titre03T")) document.getElementById("titre03T").style.fontSize=size2;
}