var digits = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
var NameDelimiters = ". ";
var validWorldNameChars = NameDelimiters + "+";
var minDigitsInIName = 2;
function isInteger1(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "A") || (c > "z"))) return false;
    }
    
 
    // All characters are numbers.
    return true;
}

function stripCharsInBag1(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 checkInternationalName(strName){
s=stripCharsInBag1(strName,validWorldNameChars);
return (isInteger1(s) && s.length >= minDigitsInIName);
}

var digits = "01234567";
var phoneNumberDelimiters = "()- ";
var validWorldPhoneChars = phoneNumberDelimiters + "+";
var minDigitsInIPhoneNumber = 8;

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 checkForm()
{
    var cname, cemail, csubject,cphone, cmessage, ccheck;
    	var name=document.msgform.sname
    var phone=document.msgform.phone

   

    with(window.document.msgform)
    {
        cname    = sname;
        cemail   = email;
        cphone   = phone;
        cmessage = information;
                  }
    
    	if ((cname.value==null)||(cname.value=="")){
		alert("Please enter your Name")
		cname.focus()
		return false
	}
	else if (checkInternationalName(cname.value)==false){
		alert("Please enter a Valid Name")
	cname.value=""
		cname.focus()
		return false
	}
   
    else if(trim(cemail.value) == '')
    {
        alert('Please enter your Email');
        cemail.focus();
        return false;
    }
    else if(!isEmail(trim(cemail.value)))
    {
        alert('Email address is not valid');
        cemail.focus();
        return false;
    }

 else if ((phone.value==null)||(phone.value==""))
 {
		alert("Please enter your Phone Number")
		phone.focus();
		return false
	}
	else if (checkInternationalPhone(phone.value)==false){
		alert("Please enter a Valid Phone Number")
		phone.value=""
		phone.focus()
		return false;
}

    else
    {
        cname.value    = trim(cname.value);
        cemail.value   = trim(cemail.value);
       cphone.value = trim(cphone.value);
                alert ('Thankyou for your Enquiry, Your Request will be processed soon.');
                      return true;
    }
}


/*
Strip whitespace from the beginning and end of a string
Input : a string
*/
function trim(str)
{
    return str.replace(/^\s+|\s+$/g,'');
}

/*
Check if a string is in valid email format. 
Returns true if valid, false otherwise.
*/
function isEmail(str)
{
    var regex = /^[-_.a-z0-9]+@(([-_a-z0-9]+\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i;
    return regex.test(str);
}