var m_styletop="29px"; 
var m_styleleft_hidden="-9000px"; 
var m_styleleft_show="1px"; 
var m_stylebgcolor_click=""; //菜单弹出时的背景颜色 
var m_stylebgcolor_unclick=""; //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; 
	} else { 
		document.getElementById(menuid).style.left=m_styleleft_hidden; 
		document.getElementById(btnid).style.backgroundColor=m_stylebgcolor_unclick; 
	} 
} 
//隐藏菜单 
function hiddenMenu(menuid,btnid) { 
	document.getElementById(menuid).style.left=m_styleleft_hidden; 
	document.getElementById(btnid).style.backgroundColor = m_stylebgcolor_unclick; 
} 
//初始化菜单按钮   xxxxxxxxxxxxxxxxx
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("ul_9").style.left = m_styleleft_hidden; 
	document.getElementById("ul_10").style.left = m_styleleft_hidden; 
	document.getElementById("ul_11").style.left = m_styleleft_hidden; 
	document.getElementById("ul_12").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("btn9").style.backgroundColor = m_stylebgcolor_unclick; 
	document.getElementById("btn10").style.backgroundColor = m_stylebgcolor_unclick; 
	document.getElementById("btn11").style.backgroundColor = m_stylebgcolor_unclick; 
	document.getElementById("btn12").style.backgroundColor = m_stylebgcolor_unclick; 
} //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); 
	} 
}