function checkFeedback()
{
  var drp=document.getElementById("ddlCountry");
  
  
 if(document.getElementById("txtname").value=="")
   {   
    alert("Enter Name!");
    document.getElementById("txtname").focus();
      return false;
  
   }
   if(document.getElementById("txtAddress1").value=="")
   {   
    alert("Enter Address!");
    document.getElementById("txtAddress1").focus();
      return false;
  
   }
   if(drp.selectedIndex==0)
   {
      alert("Select Country!");
      drp.focus();
      return false;
  }
    if(document.getElementById("txtcity").value=="")
   {   
    alert("Enter City!");
    document.getElementById("txtcity").focus();
      return false;
  
   }
    if(document.getElementById("txtTelephone").value=="")
   {   
    alert("Enter Phone number!");
    document.getElementById("txtTelephone").focus();
      return false;
  
   }
   if(!IsNumeric(document.getElementById("txtTelephone").value))
   {
        alert("Phone number must be numeric!");
        return false;
   }
    if(document.getElementById("txtEmailId").value=="")
   {   
    alert("Enter Email Address!");
    document.getElementById("txtEmailId").focus();
      return false;
  
   }
    if(document.getElementById("txtfeedbakquery").value=="")
    {   
    alert("Enter feedback!");
    document.getElementById("txtfeedbakquery").focus();
      return false;
  
    }
     if(!echeck(document.getElementById("txtEmailId").value))
     {
      document.getElementById("txtEmailId").focus();
        return false;
     }
     return true;


}


function IsNumeric(sText)
{
   var ValidChars = "0123456789";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
   }