//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( '.8em','.9em','1em','1.1em','1.2em','1.3em' );/*,'1.4em'*/
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 > 5 ) sz = 5;
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 ];
}
}

function randomepicture(){
var i = 6
headers = new Array();
headers[0] = "header1.jpg";
headers[1] = "header2.jpg";
headers[2] = "header3.jpg";
headers[3] = "header4.jpg";
headers[4] = "header5.jpg";
headers[5] = "header6.jpg";
headers[6] = "header7.jpg";
/*headers[7] = "header7.jpg";
headers[8] = "Line Nine";
headers[9] = "Line Ten";
headers[10] = "Line Eleven";
headers[11] = "Line Twelve";*/
var theradomimage = headers[Math.round(Math.random()*i)];
document.getElementById("header").style.background = 'url(img/'+theradomimage+')';
}