/**
 * DHTML phone number validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

// Declaring required variables
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 = 4;

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=15
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+14)!=")")return false
if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function checkForm(){
	if(document.form1.Name.value.search(/\S/) == -1 ) 
	{
		alert("Please Enter Name");
		document.form1.Name.focus();
		return false;
	}
	var ck_name = /^[A-Za-z ]{1,50}$/;
	//var ck_name = /^([0-9]+(\-)[0-9]{1,2})$/;
	//var ck_name =/^\d{1}\-?\d{3}\-?\d{3}\-?\d{4}$/ ;

	if(!ck_name.test(document.form1.Name.value))
	{
	alert("Please Enter Valid Name which is less than 50 characters ");
	document.form1.Name.focus();
	return false;
	}
	if(document.form1.Address.value.search(/\S/) == -1 ) 
	{
		alert("Please Enter Address");
		document.form1.Address.focus();
		return false;
	}
	if((document.form1.Address.value.length>200))
	{
	alert("Please Enter Address which is less than 200 characters");
	document.form1.Address.focus();
	return false;
	}
	if(document.form1.City.value.search(/\S/) == -1 ) 
	{
		alert("Please Enter City");
		document.form1.City.focus();
		return false;
	}
	if((document.form1.City.value.length>50))
	{
	alert("Please Enter City which is less than 50 characters");
	document.form1.City.focus();
	return false;
	}
	var Phone=document.form1.Phone
	
	if ((Phone.value==null)||(Phone.value=="")){
		alert("Please Enter Your Phone Number")
		Phone.focus()
		return false
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number")
		Phone.value=""
		Phone.focus()
		return false
	}
	if(document.form1.Email.value.search(/\S/) == -1 )
	{
		alert("Please Enter Valid Email Address");
		document.form1.Email.focus();
		return false;
	}

	var regEmail = /^([-a-zA-Z0-9._]+@[-a-zA-Z0-9.]+(\.[-a-zA-Z0-9]+)+)$/;
    
	if(!regEmail.test(document.form1.Email.value))
	{
	alert("Please Enter Valid Email Address");
	document.form1.Email.focus();
	return false;
	}

	if(document.form1.Comments.value.search(/\S/) == -1 ) 
	{
		alert("Please Enter Comments");
		document.form1.Comments.focus();
		return false;
	}
	if((document.form1.Comments.value.length>500))
	{
	alert("Please Enter Comments which is less than 500 characters");
	document.form1.Comments.focus();
	return false;
	}
return true;
}