//函数CheckStr:判断字符串是否有值 
	//参数str:要判断的目标字符串
	//created by zhouwei 2005-12-21
	function CheckStr(str){
		var s=new String(str);          
		//if (s.Trim()==""||s=="undefined"){
		if(s.Trim()==""||s.Trim()=="undefined"){
			return false;
		}else{
			
			return check_text(str);
		}
	}
	
	//判断输入值是否合法
	//created by zhouwei 2006-2-10
	function CheckIsRight(str,strname){
		var str=new String(str);
		if(CheckStr(str)==false){
			var err=strname+"不合法"
			Response.Write(Error(err));
			Response.End();
		}
	}
	
	// 方法:Trim() , Ltrim() , RTrim() 函数,除空格 
	//created by zhouwei 2006-2-10
	String.prototype.Trim = function(){
		return this.replace(/(^\s*)|(\s*$)/g, "");
	}

	String.prototype.LTrim = function(){
		return this.replace(/(^\s*)/g, "");
	}

	String.prototype.RTrim = function(){
		return this.replace(/(\s*$)/g, "");
	}
	
	//判断字符串中是否包含非法的字符
//created by zhouwei 2006-5-26
function check_text(text){
var strtmp=new String(text);
if (strtmp.indexOf("'")>-1){
	return false;
}
if (strtmp.indexOf("?")>-1){
	return false;
}
if (strtmp.indexOf("%")>-1){
	return false;
}
if (strtmp.indexOf("&")>-1){
	return false;
}
if (strtmp.indexOf("<")>-1){
	return false;
}
if (strtmp.indexOf(">")>-1){
	return false;
}
return true;

}