var min=9;
var max=15;
function increaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=max) {
         s += 1;
      }
      p[i].style.fontSize = s+"px"
   }
}
function decreaseFontSize() {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      if(s!=min) {
         s -= 1;
      }
      p[i].style.fontSize = s+"px"
   }   
}







  var preloads=[];

  var objt;
  var objb;
  var topop=100;
  var botop=0;
  var speed=75;
  var topnum=0;
  var botnum=1;
  var test=0;

window.onload=function() {
  objt=document.getElementById('top');
  objb=document.getElementById('bot');
  fadeout();
}

function fadeout() {
if(test==0) {
   topop--;
   botop++;
 }
if(objt.filters) {
   objt.style.filter='alpha(opacity='+topop+')';
   objb.style.filter='alpha(opacity='+botop+')';
 }
else {
   objt.style.opacity=topop/100;
   objb.style.opacity=botop/100;
 }
if(topop==0){
   topnum+=2;
if(topnum>preloads.length-1){
   topnum=0; //if the number of images is odd change this value to 1;
 }
   objt.src=preloads[topnum].src;
   test=1;
 }
if(test==1){
   topop++;
   botop--;
 }
if(topop==100){
   botnum+=2;
if(botnum>preloads.length-1){
   botnum=1; //if the number of images is odd change this value to 0;
 }
   objb.src=preloads[botnum].src;
   test=0;
 }
fader=setTimeout('fadeout()',speed);
 }

function preload(){
for(c=0;c<arguments.length;c++) {
   preloads[preloads.length]=new Image();
   preloads[preloads.length-1].src=arguments[c];
  }
 }
preload('images/blood_ball.jpg','images/buddha.jpg');









function changeFontSize(inc)
{
  var p = document.getElementsByTagName('p');
  for(n=0; n<p.length; n++) {
    if(p[n].style.fontSize) {
       var size = parseInt(p[n].style.fontSize.replace("px", ""));
    } else {
       var size = 12;
    }
    p[n].style.fontSize = size+inc + 'px';
   }
}


<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Created by: http://london-net.net -->
<!-- Begin
var subs_array = new Array("sub1","sub2","sub3","sub4" ,"sub5","sub6","sub7","sub8", "sub9","sub10","sub11");// Put the id's of your hidden divs in this array
function displaySubs(the_sub){
	if (document.getElementById(the_sub).style.display==""){
	document.getElementById(the_sub).style.display = "none";return
  }
  for (i=0;i<subs_array.length;i++){
	var my_sub = document.getElementById(subs_array[i]);
	my_sub.style.display = "none";
	}
  document.getElementById(the_sub).style.display = "";

  }
//  End -->