function ValidateEmail(email)
  {
    var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;  
    return emailPattern.test(email);
  }
  
  function showElement(id, show)
  {
    var element = document.getElementById(id);
    if(element != null)
    {
      if(show)
        element.style.display = 'block';
      else
        element.style.display = 'none';
    }
  }
  

  function hasClass(ele,cls) {
    return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
  }

  function addClass(ele,cls) {
    if (!this.hasClass(ele,cls)) ele.className += "  " + cls;
  }

  function removeClass(ele,cls) {
    if (hasClass(ele,cls)) {
      var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
      ele.className=ele.className.replace(reg,' ');
    }
  }
  
  function AllowNumber(s,e)
  {
    var keyCode = e.keyCode;
    if(keyCode > 31 && (keyCode < 48 || (keyCode > 57 && (keyCode <96 || keyCode > 105))))
    {
     return false;
    }
    return true;
  }
  
 function SetMaxLength(e, stringValue, maxLength)
  {
    var keyCode = e.keyCode;
    if(keyCode == 8 && keyCode == 46)  //delete key
      return true;
    if(stringValue == null || maxLength == null)
      return true;
    var length = stringValue.length;
    if(length <= maxLength)
      return true;
    return false;
  }
  
  //checking wheter date1 greater than date2 or not
  function IsGreaterDate(date1, date2, isEqual)
  {
    if(date1 == null || date2 == null)
      return false;
    var date1 = new Date(date1.getFullYear(), date1.getMonth(), date1.getDate());
    var date2 = new Date(date2.getFullYear(), date2.getMonth(), date2.getDate());
    if(isEqual)
    {
      if(date1 <= date2)
        return false;
    }
    else
    {
      if(date1 < date2)
        return false;
    }
    
    return true;  
  }

  function goToLocalPage(link) {
    window.location.href = link;
  }

  function goToWebsite(link) {
    if (link != null && link != '') {
      if (link.indexOf('http') == 0) {
        window.open(link);
      }
      else
        window.open('http://' + link);
    }
  }