// JavaScript Document
<!-- **********Start to change the Font size************************ --->

var min=8;
var max=18;
function increaseFontSize() {
   var p = document.getElementsByTagName('td');
    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('td');
     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"
   }   
}

<!-- **************End of changing the Font size********************* --->
<!---------------------------------- Start CHange the color -->
 
var backColor = new Array(); // don't change this
//backColor[0] = '#FF0000';
backColor[0] = 'RED';
//backColor[1] = '#00FF00';
backColor[1] = 'Green';
//backColor[2] = '#FFC0C0';
backColor[2] = 'Black';
//backColor[3] = '#FFFFFF';
backColor[3] = 'White';
 
function changeBG(whichColor){
document.bgColor = backColor[whichColor];
}

<!-- ---------------------------------End the Change color-->