if (self.screen) { // для браузеров 4-тых версий 
width = screen.width 
height = screen.height 
} 
else if (self.java) { // для NN3 (enabled Java) 
var jkit = java.awt.Toolkit.getDefaultToolkit(); 
var scrsize = jkit.getScreenSize(); 
width = scrsize.width; 
height = scrsize.height; 
}else{ 
width = height = 'x' // для прочих браузеров 
} 

function open_window(image_name){
//	alert(image_name);
	window_url="show_enter_photo.php?image=w"+width+"_"+image_name+".jpg";
	window_para="menubar=no,location=no,toolbar=no,scrollbars=yes,resizable=yes,status=yes,width="+(width-10)+",height="+(height-90)+"";
	window.open(window_url, "SB",window_para);

}