// object constructor
function BrowserPrp()
{
	if (navigator.appName=="Netscape") 
	{
  		this.width = window.innerWidth;
		this.height = window.innerHeight;
	}
 	if (navigator.appName.indexOf("Microsoft")!=-1) 
 	{
  		this.width = document.body.offsetWidth;
  		this.height = document.body.offsetHeight;
 	}
}