function popup( url , width , height , scrollbars )
{
	window.open( url , "popup_window" , "scrollbars=" + scrollbars + ",width=" + width + ",height=" + height + ",left=" + ( window.screen.width - width ) / 2 + ",top=" + ( window.screen.height - height ) / 2 ) ;
}

function key_cache()
{
	if( window.event && window.event.keyCode == 8 )
	{
		window.event.keyCode = 123; //Replaces with F12 button. (Does nothing in IE)
	}
}