var menu_h=null;
function init_menu_h(){menu_h=document.getElementById('menu_h');var li=menu_h.getElementsByTagName('li'),i=li.length;while(i--){li[i].onmouseover=show_h;}menu_h.onmouseout=time_h;menu_h.onmouseover=clear_h;}
var timer=null;
function time_h(){timer=setTimeout('hide_h(menu_h, null)',1000);}
function clear_h(){if(timer){clearTimeout(timer);timer = null;}}
function show_h(){var ul=this.parentNode;while(ul){if(ul.tagName.toLowerCase()=='ul'){hide_h(ul,this);break;}ul=ul.parentNode;}ul=this.firstChild;while(ul){if(ul.nodeType==1 && ul.tagName.toLowerCase()=='ul'){ul.style.display='block';ul.style.visibility='';break;}ul=ul.nextSibling;}}
function hide_h(level,skipli){var stack=[level],i=0,li,j,el,tag;do{li=stack[i].childNodes,j=li.length;while(j--){el=li[j];if(el.nodeType==1 && el!=skipli){tag=el.tagName.toLowerCase();if(tag=='li'){stack[i++]=el;}else if(tag=='ul' && el.style.display=='block'){stack[i++]=el;el.style.display='none';el.style.visibility='hidden';}}}}while(i--);}