if (self.innerWidth) {
	frameWidth = self.innerWidth;
	frameHeight = self.innerHeight;
}	else if (document.documentElement && document.documentElement.clientWidth) {
	frameWidth = document.documentElement.clientWidth;
	frameHeight = document.documentElement.clientHeight;
}else if (document.body) { 
  frameWidth = document.body.clientWidth; 
  freaeHeight  = document.body.clientHeight; 
}
vPB = frameHeight - 265;
cp = document.getElementById("center_page");

if (cp.clientHeight < vPB) {
  cp.setAttribute('style','height:'+vPB+'px');
  cp.style.height = vPB+"px";
}