function getscreen() {
var height=0; 
var width=0; 
colorDepth = screen.colorDepth; 
	if (self.screen) 
	{  
	  width = screen.width  
	  height = screen.height 
	} 
	else if (self.java) 
	{  
	  var jToolKit = java.awt.Toolkit.getDefaultToolkit();  
	  var scrsize = jToolKit.getScreenSize();  
	  width = scrsize.width; 
	  height = scrsize.height;  
	}  
	if (width > 0 && height > 0)  
	{  
	  return(width);
	} else return(0);
}