function Trim(str){
	if(str.charAt(0) == " "){
	str = str.slice(1);
	str = Trim(str);
	}
	return str;
}
function AddClass(inputid){
   document.getElementById(inputid).className="reginputblue";
}
function RemoveClass(inputid){
   document.getElementById(inputid).className="reginput";
}

/*检测是否是以字符开头的字符或数字字符串*/
function CheckCharAndNum(str){
    var re = /^([a-zA-Z]([a-zA-Z0-9])*)$/;
    return re.test(str);
}

function AddFavorite(pageurl,pagename) {
   switch(getOs()){
       case 1:window.external.addFavorite(pageurl,pagename);break;
       case 2:window.sidebar.addPanel(pagename, pageurl, "");break;
       case 0:alert("未知的浏览器");break;
   }
}

function getOs(){
   if(navigator.userAgent.indexOf("MSIE")>0)return 1;
   if(isFirefox=navigator.userAgent.indexOf("Firefox")>0)return 2;
   if(isSafari=navigator.userAgent.indexOf("Safari")>0)return 3;
   if(isCamino=navigator.userAgent.indexOf("Camino")>0)return 4;
   if(isMozilla=navigator.userAgent.indexOf("Gecko/")>0)return 5;
   return 0;
}

function getDateWeek() {
  var datastr = "";
  var weekstr = "";
  currentDate = new Date()
  with (currentDate){
  day   = getDay();
  month = getMonth()+1;
  year  = (getYear()<1900)?(1900 + getYear()):getYear();
  datestr = year+'年'+month+'月'+getDate()+'日'; 
  }
  if (day==1)
	  {weekstr = "星期一";}
  if (day==2)
	  {weekstr = "星期二";}
  if (day==3)
	  {weekstr = "星期三";}
  if (day==4)
	  {weekstr = "星期四";}
  if (day==5)
	  {weekstr = "星期五";}
  if (day==6)
	  {weekstr = "星期六";}
  if (day==0)
	  {weekstr = "星期日";} 
	  
   return datestr + " " + weekstr;	     
}