function fnCheckKeywords(keyword){
	var tempKey = keyword;
	tempKey = tempKey.replace(/^\s*(.*)/,"$1").replace(/(.*?)\s*$/,"$1");
	tempKey = tempKey.replace(/^　*(.*)/,"$1").replace(/(.*?)　*$/,"$1");
		if(tempKey==''){
			alert('关键词输入不能为空, 请重新输入！');
			return false;
		}
	 
	if(tempKey!=''){
		var regSpecialChar = new RegExp('`|~|!|@|#|$|%|\\^|\&|\\*|\\(|\\)|-|_|=|\\+|\\[|\\{|\\]|\\}|;|:|\'|"|\\\\|\\||,|<|\\.|>|/|\\?|。|，|《|》|、|？|；|‘|’|：|“|”|【|】|『|』|—|）|（|×|…|￥|！|～|·','gi');
		tempKey = tempKey.replace(regSpecialChar,'');
		tempKey = tempKey.replace(/\s/gi,'').replace(/　/gi,'');
		if(tempKey==''){
			alert('关键词输入不能全部为特殊字符，请重新输入！');
			return false;
		}
	}
	return true;
}