// JScript File

/**
 * 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 = 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);
}


//check email
function echeck(str) {    
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   //alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   //alert("Invalid E-mail Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    //alert("Invalid E-mail Address")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    //alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    //alert("Invalid E-mail Address")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    //alert("Invalid E-mail Address")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    //alert("Invalid E-mail Address")
		    return false
		 }

 		 return true					
	}
	
	function setFormFocus(bName,bPhone,bEmail){
	    var txtName = document.getElementById("txtName");
	    var Phone=document.getElementById("txtPhone");
	    var emailID=document.getElementById("txtEmail");
	    if(!bName)
	        txtName.focus();
	    else if(!bPhone)
	        Phone.focus();
	    else if(!bEmail)
	        emailID.focus();
	}
function ValidateForm(){
    var returnValue=true;
    var bName=true;
    var bPhone=true;
    var bEmail=true;
    var msg="";
    var txtName = document.getElementById("txtName");
    if ((txtName.value==null)||(txtName.value=="")){				
		msg="Enter name\n";
		bName=false;
		returnValue=false;
	}	
	var Phone=document.getElementById("txtPhone");
	
	if ((Phone.value==null)||(Phone.value=="")){		
	    if(!returnValue)
	        returnValue=false;
	    else
		    returnValue=true;
	}
	else
	{
	    if (checkInternationalPhone(Phone.value)==false){		    
		    msg+="Enter a valid phone number\n";
		    bPhone=false;
		    returnValue=false
	    }
	}	
		
	var emailID=document.getElementById("txtEmail");	
	if ((emailID.value==null)||(emailID.value=="")){		
		msg+="Enter email address";
		bEmail=false;
		returnValue=false
	}else
	{
	    if (echeck(emailID.value)==false){	
	         msg+="Enter valid email address\n";	  
		    bEmail=false;
		    returnValue=false
	    }
	    else
	    {
	        if(!returnValue)
	            returnValue=false;
	        else 
	            returnValue=true;
	    }
	}	
	if(msg!='')
	{
	    alert(msg);
	}	
	setFormFocus(bName,bPhone,bEmail);		
	return returnValue;
 }
    

function ValidateNewsLetter()
{
    var returnValue;
    var msg="";
    var txtName = document.getElementById("ctl00_contentpane_txtName");
    if ((txtName.value==null)||(txtName.value=="")){				
		msg="Enter name\n";
		txtName.focus();
		returnValue=false;
	}	 
	
	//validate email
	var emailID=document.getElementById("ctl00_contentpane_txtEmail");
	
	if ((emailID.value==null)||(emailID.value=="")){		
		msg+="Enter email address";
		emailID.focus()
		returnValue=false
	}else
	{
	    if (echeck(emailID.value)==false){	
	         msg+="Enter valid email address\n";	  
		    emailID.focus()
		    returnValue=false
	    }
	}	
	if(msg!='')
	{
	    alert(msg);
	}	
	return returnValue;
}