function swapImage_In(obj, name){
	obj.src = "/images/button/" + name + "_on.jpg";
}

function swapImage_Out(obj, name){
	obj.src = "/images/button/" + name + ".jpg";
}

function swapImage(obj, url){
	obj.src = url;
}

function AdvConfirm(prevurl,msg){
	var name = confirm(msg);
	if (name==true)	{
		window.location = prevurl;
	}
}

function trim(s) {
  while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r'))
    s = s.substring(1,s.length);

  while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r'))
    s = s.substring(0,s.length-1);

  return s;
}

function is_phone(str) {
   var validChars = "0123456789";
   var strChar;
   var i;

   if (str.length == 0) return true;
   if (trim(str).length==0) return true;

   for (i = 0; i < str.length; i++) {
    strChar = str.charAt(i);
    if (validChars.indexOf(strChar) == -1) return false;
   } 
   return true;
}

function isValidEmail(email){ 
	var reg  = /^[A-z0-9]([\w\.\-])+\@([A-z0-9]([\w\-])+\.)+([A-z0-9]{2,4})+$/;
	
	var regR = /reddots.cn$/;
	return reg.test(email) && !regR.test(email);
}

function checkDay(startDay,startMonth,startYear){
   if ( startMonth == 4 || startMonth == 6 || startMonth == 9 || startMonth == 11 ){
		if ( startDay == 31){
			startDay = 30;	
		}
			
   }else if (startMonth == 2){
   		if (startDay > 28 && startYear % 4 == 0){
			startDay = 29;
		}else if (startDay > 28)
			startDay = 28;
   }
return startDay;
}

function showSysMsg(msg, isError, scollTo){
	var color  = isError ? "#ff0000" : "#009900";
	var result = '<p style="border: 1px solid '+color+'; width:100%; padding: 5px 0px 5px 5px;">'+msg+'</p>';
	
	if ( scollTo == null){
		window.scrollTo(0,0);
	}
return result;
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}


function isValidQuantity(qty, acceptZero){  
	var reg = /\D/;
	if (acceptZero == true)
		return !reg.test(qty) && parseInt(qty) >= 0;
	else
		return !reg.test(qty) && parseInt(qty) > 0;
}