function Form_Validator(theForm)
{

var digits = "0123456789";
var phoneNumberDelimiters = "()- ";
var validWorldPhoneChars = phoneNumberDelimiters + "+";
var minDigitsInIPhoneNumber = 10;

function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
       if (((c < "0") || (c > "9"))) return(false);
    }
    // All characters are numbers.
    return(true);
}

function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return(returnString);
}

function checkInternationalPhone(strPhone){
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return(isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Please enter a valid email.")
		   return(false);
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please enter a valid email.")
		   return(false);
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Please enter a valid email.")
		    return(false);
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Please enter a valid email.")
		    return(false);
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Please enter a valid email.")
		    return(false);
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Please enter a valid email.")
		    return(false);
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Please enter a valid email.")
		    return(false);
		 }

 		 return(true);
}


  if (theForm.name.value == "")
  {
     alert("Please enter your name.");
     theForm.name.focus();
     return(false);
  }
 /* else if (theForm.company.value == "")
  {
     alert("Please enter your Organisation name.");
     theForm.company.focus();
     return(false);
  }
  else if (theForm.tele.value == "")
  {
     alert("Please enter your Telephone Number");
     theForm.tele.focus();
     return(false);
  }
var PhoneNo = theForm.tele;
if (checkInternationalPhone(PhoneNo.value)==false)
{
 alert("Please enter valid telephone number");
 theForm.tele.focus();
 return(false);
} */
var emailID=theForm.email;
	
if ((emailID.value==null)||(emailID.value=="")) {
  alert("Please enter your email address.");
  theForm.email.focus();
  return(false);
}

if (echeck(emailID.value)==false) {
  emailID.value="";
  theForm.email.focus();
 return(false);
}

   if (theForm.enquiry.value == "")
  {
     alert("Please enter your Enquiry");
     theForm.enquiry.focus();
     return(false);
  }

   return(true);
}