var availHeight   = getHeight();
var availWidth    = getWidth();
var pageBorder    = 0;
var innerBorder   = 5;
var numberOfCells = 5;
var numberOfRows  = 5;
var pageBackGroundColor = "#8FBC60";
var normalcellWidth  = 0;
var normalCellHeight = 0;
var endcellWidth     = 0;
var endcellHeight    = 0;
function getHeight()
 {
  var returnValue = "0";
  if(screen.availHeight)returnValue=screen.availHeight;
  if(window.innerHeight)returnValue = window.innerHeight;
  if(document.body && document.body.offsetHeight)returnValue = document.body.offsetHeight;
  return returnValue - 4;
}

function getWidth()
{
  var returnValue = "0";
  if(screen.availWidth)returnValue=screen.availWidth;
  if(window.innerWidth)returnValue = window.innerWidth;
  if(document.body && document.body.offsetWidth)returnValue = document.body.offsetWidth;
  return returnValue - 22;
}

function showInnerSize()
{
  alert("Height =" + availHeight +" Width =" + availWidth);
}

function getBrowserInfo()
{
 returnValue =        "Browser=\""+navigator.appName+"\" "
             +  "\n"+ "BrowserVersion=\""+navigator.appVersion+"\" "
             +  "\n"+ "java=\""+navigator.javaEnabled()+"\" "
             +  "\n"+ "cookieEnabled=\""+navigator.cookieEnabled+"\" "
             +  "\n"+ "platform=\""+navigator.platform+"\" "
             +  "\n"+ "userAgent=\""+navigator.userAgent+"\" "
             ;

 alert(returnValue);
}

function subtract(a,b)
{
 return a - b;
}

/**
divdes and roundsHalfDown
*/
function divideDown(a,b)
{
return (a - (a%b))/b;
}

function getNormalCelHeight()
{
 return divideDown(getHeight() - (2*pageBorder) - (2 * innerBorder),numberOfRows);
}
function getNormalCelWidth()
{
return divideDown(getWidth() - (2*pageBorder) - (2 * innerBorder),numberOfCells);
}