var agent=navigator.userAgent.toLowerCase();var mac=agent.indexOf('mac')!=-1;var w3c=document.getElementById?true:false;var iex=document.all?true:false;var ns4=document.layers?true:false;var isOver=false;var timer=null;function subMenu(key,isOpen){this.key=key;this.isOpen=isOpen;return this;}
subMenus=new Array();function getStyle(name,nest){nest=nest?'document.'+nest+'.':'';return w3c?document.getElementById(name).style:iex?document.all[name].style:ns4?eval(nest+'document.'+name):false;}
function hideLayer(which){timer=setTimeout('hideIt( \''+which+'\' )',300);}
function showLayer(which){clearTimeout(timer);for(i=1;i<=subMenus.length-1;i++){if(subMenus[i].key!=which&&subMenus[i].isOpen){getStyle('subMenu'+subMenus[i].key).visibility='hidden';}
if(subMenus[i].key=which)subMenus[i].isOpen=true;}
getStyle('subMenu'+which).visibility='visible';}
function hideIt(which){getStyle('subMenu'+which).visibility='hidden';for(i=1;i<=subMenus.length-1;i++){if(subMenus[i].key!=which&&subMenus[i].isOpen){getStyle('subMenu'+subMenus[i].key).visibility='hidden';}
if(subMenus[i].key=which)subMenus[i].isOpen=false;}}