function p(p_url,p_width,p_height,p_scroll) {
	if (p_url) {
		var w=(p_width) ? p_width : 457;
		var h=(p_height) ? p_height : 768;
		var left, top;
		if (window.opera) {
			left = Math.round((window.innerWidth-w)/2);
			top = Math.round((window.innerHeight-h)/2)-20;
		} else {
			left = Math.round((window.screen.availWidth-w)/2);
			top = Math.round((window.screen.availHeight-h)/2)-20;
		}
		var params = "width="+w+",height="+h+",left="+left+",top="+top+",screenX="+left+",screenY="+top+",dependent=1,location=0,menubar=0,status=0,toolbar=0,resizable=0";
		params += (p_scroll) ? ",scrollbars=1" : ",scrollbars=0";
		pw=window.open(p_url,"pw", params);
		if(window.focus) {
			window.setTimeout('pw.focus()', 200); 
		} 
	}
}