function load_menu_top(menu_home, menu_2012,menu_past, menu_reg, contact)
{
  var web_href,web_href1,web_fan;              //全部的地址，有效地址，相反的地址
  web_href=document.location.href;
  web_href=web_href.split("/");  
  web_href1=web_href[web_href.length-1];  //得到网址的最后部分
  web_href1=web_href1.split("?");
  web_fan=web_href1[0].replace("ch.","en.");
  web_fan=web_fan.replace("asp","htm");
  
  var menu=["学术会议2011","学术会议2012","过往会议","登记报名","联系我们"];
  var menu_href=["paper_add_ch.htm","paper2012_ch.htm","home_ch.htm","reg_ch.htm","contact_ch.htm"];
  var menu_target = ["_parent", "_parent", "_parent", "_parent", "_parent"];
  var menu_value = [menu_home, menu_2012,menu_past, menu_reg, contact];

  
  var string1="";
  var string_top="";  //top table
  var h;
  if(menu_value[0]=="1")  //selected
  {
      string1="<td class='td_on'>"+menu[0]+"</td>";
  }
  else if(menu_value[0]=="0")  //no selected
  {
      string1="<td class='td_off' onmouseover=\"this.className='td_over'\" onmouseout=\"this.className='td_off'\"><a href='"+menu_href[0]+"' target='"+menu_target[0]+"' class='menu'>"+menu[0]+"</a></td>";
  }
  for(h=1;h<5;h++)
  {
    if(menu_value[h]=="1")  //selected
    {
      string1=string1+"<td>|</td><td class='td_on'>"+menu[h]+"</td>";
    }
    else if(menu_value[h]=="0") // no selected
    {
      string1=string1+"<td>|</td><td class='td_off' onmouseover=\"this.className='td_over'\" onmouseout=\"this.className='td_off'\"><a href='"+menu_href[h]+"' target='"+menu_target[h]+"' class='menu'>"+menu[h]+"</a></td>";
    }
  }  
  string1="<table border='0' width='510'  cellpadding='0' cellspacing='0' class='table_hei10'><tr>"+string1+"</tr></table>"
  string1="<table border='0' cellpadding='0' cellspacing='0'  width='100%' class='table5' background='../logos/10_top_bg_ch.jpg'><tr><td  height='70' colspan='2'></td></tr><tr><td width='12%'  height='40' valign='bottom'></td><td width='98%'   valign='bottom'>"+string1+"</td></tr><tr><td  height='5' valign='bottom' colspan='2' bgcolor='#996600'></td></tr></table>";
  string1=string1+"<br><br><table border='0' width='950' cellpadding='0' style='border-collapse: collapse' align='center' bgcolor='white'><tr><td><p style='margin-right: 10px; margin-top: 5px'><a href='"+web_fan+"'><img border='0' id='img1' src='../logos/engnew_off.jpg' align='right'></a></td></tr></table>";
  document.getElementById("p_menu_top").innerHTML=string1;
}