function js_push(Layer,k)
{
  layer1.style.display="none"
  layer2.style.display="none"
  layer3.style.display="none"
  layer4.style.display="none"
  layer5.style.display="none"
  layer7.style.display="none"
  layer8.style.display="none"

if (k=="none")
  {Layer.style.display="block"}
else
  {Layer.style.display="none"}
}

document.write('<div id="navigation" style="position:absolute; left:-160px; top:0px; width:180px; height:95px; z-index:1"> ')
document.write('  <table width="100%" bgcolor="#ffffff" border="0" cellspacing="0" cellpadding="3" onmouseover=move(160,0) onmouseout=move(-160,0)>')
document.write('    <tr>')
document.write('      <td class=p3 bgcolor=#BDC8cc><a href="#" onclick=js_push(layer1,layer1.style.display)>概述</a><br>')
document.write('        <div id="layer1" style="display:none">')
document.write('        　·<a href="main2.htm">分散体系</a><br>')
document.write('        　·<a href="main2a2.htm">液体药剂的含义与特点</a><br>')
document.write('        　·<a href="main2a3.htm">常用溶剂</a><br>')
document.write('        </div>')
document.write('        <a href="#" onclick=js_push(layer2,layer2.style.display)>表面现象</a><br>')
document.write('        <div id="layer2" style="display:none">')
document.write('        　·<a href="main2b1.htm">含义及与药剂学的关系</a><br>')
document.write('        　·<a href="main2b2.htm">表面能力与铺展系数</a><br>')
document.write('        </div>')
document.write('        <a href="#" onclick=js_push(layer3,layer3.style.display)>表面活性剂</a><br>')
document.write('        <div id="layer3" style="display:none">')
document.write('        　·<a href="main2c1.htm">含义与特点</a><br>')
document.write('        　·<a href="main2c2.htm">种类</a><br>')
document.write('        　·<a href="main2c3.htm">基本性质</a><br>')
document.write('        　·<a href="main2c4.htm">应用</a><br>')
document.write('        </div>')
document.write('        <a href="#" onclick=js_push(layer4,layer4.style.display)>溶解</a><br>')
document.write('        <div id="layer4" style="display:none">')
document.write('        　·<a href="main2d1.htm">溶解现象</a><br>')
document.write('        　·<a href="main2d2.htm">溶解度的表示方法</a><br>')
document.write('        　·<a href="main2d3.htm">增加药物溶解度的意义</a><br>')
document.write('        　·<a href="main2d4.htm">增加药物溶解度的方法</a><br>')
document.write('        </div>')
document.write('        <a href="main2e.htm">真溶液型药剂</a><br>')
document.write('        <div id="layer5" style="display:none">')
document.write('        　·<a href="main2e1.htm">溶液剂</a><br>')
document.write('        　·<a href="main2e2.htm">芳香水剂与药露</a><br>')
document.write('        　·<a href="main2e3.htm">甘油剂</a><br>')
document.write('        　·<a href="main2e4.htm">醑剂</a><br>')
document.write('        </div>')
document.write('        <a href="main2f.htm">胶体溶液型药剂</a><br>')
document.write('        <a href="#" onclick=js_push(layer7,layer7.style.display)>乳浊液型药剂</a><br>')
document.write('        <div id="layer7" style="display:none">')
document.write('        　·<a href="main2g1.htm">含义与特点</a><br>')
document.write('        　·<a href="main2g2.htm">乳剂的种类</a><br>')
document.write('        　·<a href="main2g3.htm">常用乳化剂</a><br>')
document.write('        　·<a href="main2g4.htm">乳剂处方的拟订</a><br>')
document.write('        　·<a href="main2g5.htm">乳剂的制备方法</a><br>')
document.write('        　·<a href="main2g6.htm">影响乳剂制备的因素</a><br>')
document.write('        </div>')
document.write('        <a href="#" onclick=js_push(layer8,layer8.style.display)>混悬液型药剂</a><br>')
document.write('        <div id="layer8" style="display:none">')
document.write('        　·<a href="main2h1.htm">含义及稳定性</a><br>')
document.write('        　·<a href="main2h2.htm">稳定剂</a><br>')
document.write('        </div>')
document.write('        </td>')
document.write('      <td bgcolor="#990000" class=p3><center><font color="#ffffff">导</font><br>')
document.write('        <font color="#ffffff">航</font><br>')
document.write('        <font color="#ffffff">条</font></center></td>')
document.write('    </tr>')
document.write('  </table>')
document.write('</div>')