var xmlHttp

function showHint(str)
{
if (str.length<=8)
  { 
  document.getElementById("txtHint").innerHTML="Enter The Mobile Number";
  return;
  }  
else if(str.length=10)
  { 
 
	st=str.substring(0,4);
	switch (st)
	{
	
	case "9866":
thint= "Airtel Andhra"
enableButton();
break
case "9848":
thint= "Idea Andhra"
enableButton();
break
case "9885":
thint= "Presently we do not support Hutch Andhra"
disableButton();
break
case "9440":
thint= "Presently we do not support BSNL Andhra"
disableButton();
break
case "9963":
thint= "Airtel Andhra"
enableButton();
break
case "9959":
thint= "Airtel Andhra"
enableButton();
break
case "9866":
thint= "Airtel Andhra"
enableButton();
break
case "9849":
thint= "Airtel Andhra"
enableButton();
break
case "9989":
thint= "Airtel Andhra"
enableButton();
break
case "9908":
thint= "Airtel Andhra"
enableButton();
break
case "9949":
thint= "Airtel Andhra"
enableButton();
break
case "9900":
thint= "Airtel Karnataka"
enableButton();
break
case "9845":
thint= "Airtel Karnataka"
enableButton();
break
case "9880":
thint= "Airtel Karnataka"
enableButton();
break
case "9901":
thint= "Airtel Karnataka"
enableButton();
break
case "9902":
thint= "Airtel Karnataka"
enableButton();
break
case "9945":
thint= "Airtel Karnataka"
enableButton();
break
case "9972":
thint= "Airtel Karnataka"
enableButton();
break
case "9980":
thint= "Airtel Karnataka"
enableButton();
break
case "9000":
thint= "Airtel Andhra"
enableButton();
break
case "9895":
thint= "Presently we do not support Airtel Kerala"
disableButton();
break
case "9700":
thint= "Airtel Andhra"
enableButton();
break
case "9704":
thint= "Airtel Andhra"
enableButton();
break
default:
  	thint= "Presently We Dont support this Network";
    disableButton();
	}
	  
   document.getElementById("txtHint").innerHTML=thint;

  return;
  } 
  
}

function disableButton() 
	{
	var theButton = document.getElementById('submit');
	theButton.value="submit";
	theButton.disabled = true;
	return true;
	}
	
	function enableButton() 
	{
	var theButton = document.getElementById('submit');
	theButton.value="submit";
	theButton.disabled = false;
	return true;
	}
    
function GetXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  }
return xmlHttp;
}



function ltrim(s)
	{
		return s.replace(/^\s*/,"")
	}

	function rtrim(s)
	{
		return s.replace(/\s*$/,"");
	}

	function trim(s)
	{
		return rtrim(ltrim(s));
	}
	
function IsEmpty()
	{				
				if(trim(document.SMS.email.value) == "")
		        {
					alert("Please enter number");
					document.SMS.email.focus();
					return false;
			    }
				if(document.SMS.email.value.length != 10)
				{
					alert("Please enter complete number");
					document.SMS.email.focus();
					return false;
				}
				if(trim(document.SMS.name.value) == "" )
		        {
					alert("Please enter your name or number");
					document.SMS.name.focus();
					return false;
			    }			
			return true;
	}