function checktrim(instr){
        return instr.replace(/^[\s]*/gi,'').replace(/[\s]*$/gi,'');
}

function checkKeyword(fm){
	if(!checktrim(fm.BbsKeyword.value)){alert('．請輸入要搜尋的關鍵字');fm.BbsKeyword.focus();return false;}
//        fm.SearchSubmit.disabled = true;
        fm.submit();
}

function ClearKeyword(fm){
	if( fm.BbsKeyword.value == "請輸入主題" ) {
		fm.BbsKeyword.value = "";
	}
}