//================================================================================   
   
 // 弹出菜单  
   
 // 作者：邬博  
   
 // 描述: 弹出式菜单实现，配合menu.CSS样式实现  
   
 // 更新: 2008-06-18   
   
 //================================================================================   
   
   
   
 //菜单样式常量  
   
 var m_styletop="29px";  
 var m_styleleft_hidden="-9000px";  
 var m_styleleft_show="0px";  
 var m_stylebgcolor_click="#FFF"; //菜单弹出时的背景颜色  
 var m_stylebgcolor_unclick="#FFF"; //菜单隐藏式的背景颜色  
 var m_spanlaction=":"; //当前命令导航常量  
 var m_spanpointer=">";//当前命令导航箭头  
   
 //显示菜单  
   
 function showMenu(menuid,btnid)  
 {  
     if (document.getElementById(menuid).style.left==m_styleleft_hidden)  
     {  
         initMenu();  
         document.getElementById(menuid).style.left=m_styleleft_show;  
         document.getElementById(menuid).style.top=m_styletop;  
         document.getElementById(btnid).style.backgroundColor=m_stylebgcolor_click; 
		 document.getElementById(btnid).style.border = "1px solid #D4D4D2";
     }  
     else   
     {  
         document.getElementById(menuid).style.left=m_styleleft_hidden;  
         document.getElementById(btnid).style.backgroundColor=m_stylebgcolor_unclick; 
		 document.getElementById(btnid).style.border = "none";
     }  
   
 }  
   
 //隐藏菜单  
   
 function hiddenMenu(menuid,btnid)  
   
 {  
   
     document.getElementById(menuid).style.left=m_styleleft_hidden;  
     document.getElementById(btnid).style.backgroundColor = m_stylebgcolor_unclick;  
     document.getElementById(btnid).style.border = "none";
 }  
   
 //初始化菜单按钮  
   
 function initMenu()  
   
 {  
     document.getElementById("ul_1").style.left = m_styleleft_hidden;  
     document.getElementById("ul_2").style.left = m_styleleft_hidden; 
	 document.getElementById("ul_3").style.left = m_styleleft_hidden;  
     document.getElementById("ul_4").style.left = m_styleleft_hidden; 
	 document.getElementById("ul_5").style.left = m_styleleft_hidden;  
     document.getElementById("ul_6").style.left = m_styleleft_hidden; 
	 document.getElementById("ul_7").style.left = m_styleleft_hidden;  
     document.getElementById("ul_8").style.left = m_styleleft_hidden; 
     document.getElementById("btn1").style.backgroundColor = m_stylebgcolor_unclick;  
     document.getElementById("btn2").style.backgroundColor = m_stylebgcolor_unclick; 
	 document.getElementById("btn3").style.backgroundColor = m_stylebgcolor_unclick;  
     document.getElementById("btn4").style.backgroundColor = m_stylebgcolor_unclick; 
	 document.getElementById("btn5").style.backgroundColor = m_stylebgcolor_unclick;  
     document.getElementById("btn6").style.backgroundColor = m_stylebgcolor_unclick; 
	 document.getElementById("btn7").style.backgroundColor = m_stylebgcolor_unclick;  
     document.getElementById("btn8").style.backgroundColor = m_stylebgcolor_unclick; 
	 document.getElementById("btn1").style.border = "none";
	 document.getElementById("btn2").style.border = "none";
	 document.getElementById("btn3").style.border = "none";
	 document.getElementById("btn4").style.border = "none";
	 document.getElementById("btn5").style.border = "none";
	 document.getElementById("btn6").style.border = "none";
	 document.getElementById("btn7").style.border = "none";
	 document.getElementById("btn8").style.border = "none";
 }  
   
   
   
 //当鼠标以上时清楚时间对象  
   
 function drop_mouseover()  
   
 {  
     try  
     {  
         window.clearTimeout(timer);  
     }  
   
     catch(e)  
     {  
   
     }  
   
 }  
   
   
   
 //当鼠标移开后隐藏菜单  
   
 function drop_mouseout(menuid,btnid)  
   
 {  
   
     var posSel = document.getElementById(menuid).style.left;  
   
     if(posSel != m_styleleft_hidden)  
   
     {  
   
         timer = setTimeout("hiddenMenu('"+menuid+"','"+btnid+"')", 800);  
   
     }  
   
 }