function doResize() {
  var element = document.getElementById('main_container');
  if (element != null) {
    var size = getWindowWH();
//    alert(element.style.width);
//    alert(size[0] + ' - -' + size[1]);
    element.style.height = (size[1] - 240) + 'px';
  }
}

// *****************************************************************************************************

function getClientWH() {
	var x,y;
	var test1 = document.body.scrollHeight;
	var test2 = document.body.offsetHeight
	if (test1 > test2) // all but Explorer Mac
	{
		x = document.body.scrollWidth;
		y = document.body.scrollHeight;
	}
	else // Explorer Mac;
	     //would also work in Explorer 6 Strict, Mozilla and Safari
	{
		x = document.body.offsetWidth;
		y = document.body.offsetHeight;
	}
	
	return new Array(x, y);
}

function getWindowWH() {
  var x,y;
  if (self.innerHeight) // all except Explorer  
  {
	  x = self.innerWidth;
	  y = self.innerHeight;
  }
  else if (document.documentElement && document.documentElement.clientHeight)
	  // Explorer 6 Strict Mode
  {
	  x = document.documentElement.clientWidth;
	  y = document.documentElement.clientHeight;
  }
  else if (document.body) // other Explorers
  {
	  x = document.body.clientWidth;
	  y = document.body.clientHeight;
  }
 	return new Array(x, y);
}

function getScrollingWH() {
	var x,y;
	if (self.pageYOffset) // all except Explorer
	{
		x = self.pageXOffset;
		y = self.pageYOffset;
	}
	else if (document.documentElement && document.documentElement.scrollTop)
		// Explorer 6 Strict
	{
		x = document.documentElement.scrollLeft;
		y = document.documentElement.scrollTop;
	}
	else if (document.body) // all other Explorers
	{
		x = document.body.scrollLeft;
		y = document.body.scrollTop;
	}
 	return new Array(x, y);	
}

// *****************************************************************************