function validateFields()
{
	  var emailFilter=/^.+@.+\..{2,3}$/;
	 if(document.getElementById('name').value=='' )
	 {    
		alert("Sorry! we cannot complete your request, please enter Your Name");
		document.getElementById('name').focus();
		return false;
	 }
	 else if (document.getElementById('name').value!='')
	 {
		 if(!isAlphabet(document.getElementById('name')))
		 {
			 return false; 
		 }
	  }
	 if(document.getElementById('email').value=='' )
	 {
		alert("Sorry! we cannot complete your request, please enter your email address");
		document.getElementById('email').focus();
		return false;
	 }
	 var emailFilter=/^.+@.+\..{2,3}$/;
	 if(!emailFilter.test(document.getElementById('email').value)) 
	 { 
		alert("Error: Invalid Email!"); 
		document.getElementById('email').focus(); 
		return false; 
	  }
	 if(document.getElementById('subject').value=="")
	  {
		alert("Sorry! we cannot complete your request, please select subject ? ");
		document.getElementById('subject').focus();
		return false;
	  }
	   if(document.getElementById('message').value=="")
	  {
		alert("Sorry! we cannot complete your request, please enter the message");
		document.getElementById('message').focus();
		return false;
	  }
	  else if(document.getElementById('captcha_code').value=="")
	  {
		alert("Sorry! we cannot complete your request, please enter the security code as given below");
		document.getElementById('captcha_code').focus();
		return false;
	  }
	  else
	  {
		  document.contact_form.submit();
	  } /**/
          	
			//alert("dfssdf");
}



function is_email(str) 
{

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   
	   return false;
	}
	
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	  // alert("Invalid E-mail ID")
	   return false;
	}
	
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
	  //  alert("Invalid E-mail ID")
		return false;
	}
	
	if (str.indexOf(at,(lat+1))!=-1){
	//  alert("Invalid E-mail ID")
	return false;
	}
	
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
	// alert("Invalid E-mail ID")
	return false;
	}
	
	if (str.indexOf(dot,(lat+2))==-1){
	//alert("Invalid E-mail ID")
	return false;
	}
			
	if (str.indexOf(" ")!=-1){
	// alert("Invalid E-mail ID")
	return false;
	}
	else
	 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;
   
}

function isAlphabet(elem){
	var alphaExp = /^[a-zA-Z\s]+$/;
	
	if(elem.value.match(alphaExp)){
		return true;
	}else{
		alert("Sorry! we cannot complete your request, please enter only alphabets and spaces. ");
		elem.value="";
		elem.focus();
		return false;
	}
}

var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
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 trim(s)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not a whitespace, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}
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){
var bracket=3
strPhone=trim(strPhone)
if(strPhone.indexOf("+")>1) return false
if(strPhone.indexOf("-")!=-1)bracket=bracket+1
if(strPhone.indexOf("(")!=-1 && strPhone.indexOf("(")>bracket)return false
var brchr=strPhone.indexOf("(")
if(strPhone.indexOf("(")!=-1 && strPhone.charAt(brchr+2)!=")")return false
if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
s=stripCharsInBag(strPhone,validWorldPhoneChars);
if((s.length)>minDigitsInIPhoneNumber) return false 

return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}