// JavaScript Document
function isBlank( s )
{
  var len=s.length;
  for( i = 0; i < len; i ++ )
  {
    if( s.charAt(i) != " " )
    return false;
  }
  return true;
}

function check()
{
		var f = document.serch;
		if( isBlank(f.keyword.value) || f.keyword.value=="keywords"){ f.keyword.focus();alert( "Please input keywords!" );return false;}
		return true;
}

if (document.getElementById){ 
document.write('<style type="text/css">\n')
document.write('.submenu{display: ;}\n')
document.write('</style>\n')
}
function SwitchMenu(num,subiddisplay)
{
         for (var i=1; i<=4; i++)
		 {
			  eval("subid" + i + ".style.display=\"none\";");
		 }
		
		 whichEl = eval("subid" + num);
		 //alert(whichEl.style.display);
		 //if (whichEl.style.display=="none")
		 if (subiddisplay == "none")
         {
			 eval("subid" + num + ".style.display=\"\";");
			 //whichEl.style.display="";
		 }
		 else
		 {
		    eval("subid" + num + ".style.display=\"none\";");
			 //whichEl.style.display="none";
		 }	 
}