我需要从仅在之后显示的网站中提取值 单击一个按钮。该值在源代码中可见 当我使用Firebug访问它但在结果中找不到它 of mechanize.get（url）。
我应该如何使用Ruby和Mechanize获取数据？
注意：我想要提取的值是OpenStreetMap地图的坐标。
HTML code：
<body>
<div id="backgrounds_header"></div>
<div id="global">
<div id="header"></div>
<ul id="menu"></ul>
<div id="main">
<div id="content">
<div id="tab_global">
<div id="tab_resultat_global">
<div id="tab_page">
<div id="recherche_zone_moins_plus"></div>
<divid="recherche_carbu_boutons_affichage"></div>
<form id="pagination" method="GET"action="/recherche/">
<div style="padding-left: 10px;"></div>
<table id="tab_resultat">
<tbody>
<tr></tr>
<tr class="infos" style="display: none;">
<td colspan="11">
<div class="infos"></div>
<div class="minimap">
<div class="indisponible" style="text-align: center; color: red; display: none; float: left;"></div>
<tr id="67480002" class="data charged"></tr>
<div class="actions" style="display:block; float: right"></div>
<div id="minimap67480002" class="olMap" style="height: 300px; width: 500px;">
<div id="OpenLayers_Map_2_OpenLayers_ViewPort" class="olMapViewport olControlDragPanActive olControlZoomBoxActive olControlPinchZoomActive olControlNavigationActive" style="position: relative; overflow: hidden; width: 100%; height: 100%;">
<div id="OpenLayers_Map_2_OpenLayers_Container" style="position: absolute; z-index: 749; left: 0px; top: 0px;">
<div id="OpenLayers_Layer_WMTS_23" class="olLayerDiv olLayerGrid" style="position: absolute; width: 100%; height: 100%; z-index: 100;" dir="ltr"></div>
<div id="OpenLayers_Layer_Vector_34" class="olLayerDiv" style="position: absolute; width: 100%; height: 100%; z-index: 330; left: 0px; top: 0px;" dir="ltr">
<svg id="OpenLayers_Layer_Vector_34_svgRoot" style="display: block;" width="500" height="300" viewBox="0 0 500 300">
<g id="OpenLayers_Layer_Vector_34_root" style="visibility: visible;" transform=""></g>
</svg>
</div>
</div>
<div id="OpenLayers_Control_Zoom_5" class="olControlZoom olControlNoSelect" style="position: absolute; z-index: 1004;" unselectable="on"></div>
<div id="OpenLayers_Control_ArgParser_6" class="olControlArgParser olControlNoSelect" style="position: absolute; z-index: 1004;" unselectable="on"></div>
<div id="OpenLayers_Control_Attribution_7" class="olControlAttribution olControlNoSelect" style="position: absolute; z-index: 1004;" unselectable="on"></div>
</div>
</div>
<input id="67480002_lat" type="hidden" value="48.8229151543"></input>
<input id="67480002_lon" type="hidden" value="8.03104056977"></input>
</div>
<span class="clear"></span>
</td>
</tr> <tr id="67960001" class="data clair charged show"></tr>
<tr class="infos" style="">
<td colspan="11">
<div class="infos"></div>
<div class="minimap">
<div class="indisponible" style="text-align: center; color: red; display: none; float: left;"></div>
<div class="actions" style="display:block; float: right"></div>
<div id="minimap67960001" class="olMap" style="height: 300px; width: 500px;">
<div id="OpenLayers_Map_47_OpenLayers_ViewPort" class="olMapViewport olControlDragPanActive olControlZoomBoxActive olControlPinchZoomActive olControlNavigationActive" style="position: relative; overflow: hidden; width: 100%; height: 100%;">
<div id="OpenLayers_Map_47_OpenLayers_Container" style="position: absolute; z-index: 749; left: 0px; top: 0px;">
<div id="OpenLayers_Layer_WMTS_67" class="olLayerDiv olLayerGrid" style="position: absolute; width: 100%; height: 100%; z-index: 100;" dir="ltr"></div>
<div id="OpenLayers_Layer_Vector_78" class="olLayerDiv" style="position: absolute; width: 100%; height: 100%; z-index: 330; left: 0px; top: 0px;" dir="ltr"></div>
</div>
<div id="OpenLayers_Control_Zoom_50" class="olControlZoom olControlNoSelect" style="position: absolute; z-index: 1004;" unselectable="on"></div>
<div id="OpenLayers_Control_ArgParser_51" class="olControlArgParser olControlNoSelect" style="position: absolute; z-index: 1004;" unselectable="on"></div>
<div id="OpenLayers_Control_Attribution_52" class="olControlAttribution olControlNoSelect" style="position: absolute; z-index: 1004;" unselectable="on"></div>
</div>
</div>
<input id="67960001_lat" type="hidden" value="48.5392769"></input>
<input id="67960001_lon" type="hidden" value="7.6491786"></input>
</div>
<span class="clear"></span>
</td>
</tr> <tr id="67600004" class="data charged show"></tr>
<tr class="infos" style="">
<td colspan="11">
<div class="infos"></div>
<div class="minimap">
<div class="indisponible" style="text-align: center; color: red; display: none; float: left;"></div>
<div class="actions" style="display:block; float: right"></div>
<div id="minimap67600004" class="olMap" style="height: 300px; width: 500px;">
<div id="OpenLayers_Map_95_OpenLayers_ViewPort" class="olMapViewport olControlDragPanActive olControlZoomBoxActive olControlPinchZoomActive olControlNavigationActive" style="position: relative; overflow: hidden; width: 100%; height: 100%;">
<div id="OpenLayers_Map_95_OpenLayers_Container" style="position: absolute; z-index: 749; left: 0px; top: 0px;">
<div id="OpenLayers_Layer_WMTS_115" class="olLayerDiv olLayerGrid" style="position: absolute; width: 100%; height: 100%; z-index: 100;" dir="ltr"></div>
<div id="OpenLayers_Layer_Vector_126" class="olLayerDiv" style="position: absolute; width: 100%; height: 100%; z-index: 330; left: 0px; top: 0px;" dir="ltr">
<svg id="OpenLayers_Layer_Vector_126_svgRoot" style="display: block;" width="500" height="300" viewBox="0 0 500 300">
<g id="OpenLayers_Layer_Vector_126_root" style="visibility: visible;" transform="">
<g id="OpenLayers_Layer_Vector_126_vroot">
<image id="OpenLayers_Geometry_Point_128" cx="249.99999999988358" cy="149.99999998370185" r="1" preserveAspectRatio="none" x="242" y="141" width="15" height="18" xlink:href="/bundles/carto/images//interface/carto/pompe_vide.gif" style="opacity: 1" fill="#000000" fill-opacity="1" stroke="#000000" stroke-opacity="1" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"></image>
</g>
<g id="OpenLayers_Layer_Vector_126_troot"></g>
</g>
</svg>
</div>
</div>
<div id="OpenLayers_Control_Zoom_98" class="olControlZoom olControlNoSelect" style="position: absolute; z-index: 1004;" unselectable="on">
<a class="olControlZoomIn olButton" href="#zoomIn">
+
</a>
<a class="olControlZoomOut olButton" href="#zoomOut">
−
</a>
</div>
<div id="OpenLayers_Control_ArgParser_99" class="olControlArgParser olControlNoSelect" style="position: absolute; z-index: 1004;" unselectable="on"></div>
<div id="OpenLayers_Control_Attribution_100" class="olControlAttribution olControlNoSelect" style="position: absolute; z-index: 1004;" unselectable="on"> Data ©
<a target="_blank" href="http://www.openstreetmap.org/copyright/fr">
OpenStreetMap
</a>
contributors
</div>
</div>
</div>
<input id="67600004_lat" type="hidden" value="48.2644252503"></input>
<input id="67600004_lon" type="hidden" value="7.44123443118"></input>
</div>
<span class="clear"></span>
</td>
</tr>