var digits = "0123456789";
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 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);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}
function alphanumeric(alphane)
            {
                var numaric = alphane;
                for(var j=0; j<numaric.length; j++)
                    {
                      var alphaa = numaric.charAt(j);
                      var hh = alphaa.charCodeAt(0);
                      if(hh!=32)                     
                      {
                          if((hh > 64 && hh<91) || (hh > 96 && hh<123))
                          {
                          }
                            else
                            {
                             return false;
                            }
                       }
                    }
             return true;
            }
			
			
function valid()
{
if(document.contact.name1.value=="")
{
alert("Please enter your name");
document.contact.name1.focus();
return false;
}

if(!isNaN(document.getElementById('name1').value))
      {
       alert("Please Enter Valid Name.");   
       document.getElementById('name1').focus();                 
       return false
      }
    if(alphanumeric(document.getElementById('name1').value)==false)
         {
          alert('Please Enter Valid Name.');
          document.getElementById('name1').focus();
          return false;
         } 
		 
if(document.contact.email_id.value=="")
	{
	alert("Please fill email-id");
	document.contact.email_id.focus();
	return false;
	}
	
 	strEmail = document.contact.email_id.value;
    if (!(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(strEmail)))
	{   
    alert("E mail Address Not Valid.");
    document.contact.email_id.focus();
    return false;
    }
	var Phone=document.contact.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;
	}
	
	return true;
}

function valid_form()
{
 if(document.form1.email.value=="")
	{
	alert("Please enter email-id");
	document.form1.email.focus();
	return false;
	}
	strEmail = document.form1.email.value;
    if (!(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(strEmail)))
	{   
    alert("E mail Address Not Valid.");
    document.form1.email.focus();
    return false;
    }
	
	return true;
}