/* for email validation*/

function checkEmail(email) {
if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email)){
return (true)
}
return (false)
}


/**
 *  phone number validation script. 
 */

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

/* End phone validation script */



function func()
{
	var phone=document.frm.phone;
	var Email=document.frm.email;
	if(document.frm.username.value==''){
		alert('Name is Mandatory');
		document.frm.username.focus();
		return false;
	}else if(document.frm.email.value==''){
		alert('Email is Mandatory');
		document.frm.email.focus();
		return false;
	}else if (checkEmail(Email.value)==false){
		alert("Please Enter a Valid E-mail id")
		Email.value="";
		Email.focus();
		return false;
	}else if(document.frm.phone.value==''){		
		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 if(document.frm.vehicles.value==''){
		alert('Please Enter Vehicle  Name');
		document.frm.vehicles.focus();
		return false;
	}else if(document.frm.comments.value==''){
		alert('Comment is Mandatory');
		document.frm.comments.focus();
		return false;
	}
	
	return true;
}