function setCookie(sName,sValue,oExpires,sPath,sDmomain,bSecure){
			var sCookie = sName + "="+encodeURIComponent(sValue);
			if(oExpires){
				sCookie += "; expires="+ oExpires.toGMTString();
			}
			if(sPath){
				sCookie += "; path="+ sPath;
			}
			if(sDmomain){
				sCookie += "; domain="+sDmomain;
			}
			
			if(bSecure){
				sCookie += "; secure=";
			}
			document.cookie = sCookie;
}

function  getCookie(sName){
		var sRE = "(?:; )?"+ sName + "=([^;]*);?"
		var oRE = new RegExp(sRE);
		if(oRE.test(document.cookie)){
			return decodeURIComponent(RegExp["$1"]);
		}else {
			return null;
		}
}

//字符串长度
function sizeOfString(value){
   return value.replace(/[^\x00-\xff]/g,"xx").length; 
}