function LTrim(s)
{
    for(var i=0;i<s.length;i++)
        if(s.charAt(i)!=' ')
         return s.substring(i,s.length);
     return "";
}

function RTrim(s)
{
    for(var i=s.length-1;i>=0;i--)
        if(s.charAt(i)!=' ')
            return s.substring(0,i+1);
        return "";
}

function Trim(s)
{
    return RTrim(LTrim(s));
}

function notice(s)
{
	alert(s);
	document.searchform.keyword.focus();
	return false;
}


function getsearchword()
{

	var _keyword = document.searchform.keyword.value;
	_keyword = Trim(_keyword);
	var _kwArray = _keyword.split(" ");
	var _searchword = "";
	var _sword = "";
	for(var i=0;i<_kwArray.length;i++)
	{
		if(i==0)
		{
			_searchword = Trim(_kwArray[0]);
		}
		else
		{
			_searchword = _searchword + "*" + Trim(_kwArray[i]);
		}
	}
	if(_searchword != "")
	{

              _searchword = "SEARCHVALUE=$^~" + _searchword + "$^~";
              	
	}

	document.searchform.searchword.value=_searchword;
                
}
      

function submitsearch()
{
		
	var _keyword = Trim(document.searchform.keyword.value);

	
	if(_keyword.length>0)
	{
		if(_keyword.indexOf("+")>=0)
		{
			return notice("检索词中不能含有关键字'+'");
		}
		else if(_keyword.indexOf("*")>=0)
		{
			return notice("检索词中不能含有关键字'*'");
		}
		else if(_keyword.indexOf("-")>=0)
		{
			return notice("检索词中不能含有关键字'-'");
		}
	}
	else
	{
		return notice("检索词不能为空");
	}
	
	
	document.searchform.action="http://210.75.211.170/bjgov/search";
	getsearchword();
		
}