function OnTop() {
	window.scroll(0, 0);
}

window.name="rosta_wnd";
	function OpenWindow(url, w, h) {
		
		var scr = 'no';
		var x = (screen.width - w)/2;
		var y = (screen.height - w)/2;
		
		open(url, "", 'menubar=no,directories=no,location=no,resizable=no, target=viv scrollbars='+scr+',left=' + x + ', top=' + y + ',width='+w +',height='+h);
	}