/******************************************************************************************

Function Name : f_isEmpty

Input : String 

Output : true or false

Description : This function returns true if string is not empty o.w. returns false.

******************************************************************************************/

function f_isEmpty(msStr)

{   



    var   msTemp=msStr;

    for(mnI=0;mnI<msTemp.length;mnI++)

    {

     // find out ascii value of each character   

     temp=msTemp.charCodeAt(mnI);

    if ( temp != 10 &&  temp != 13 &&  temp != "�@" &&  temp != 32)

                    {

                        return false;

                    }

    }

    msStr.value="";

    return true;

}



/******************************************************************************************

Function Name : f_isNumber

Input : String 

Output : true or false

Description : This function returns true if string is numeric o.w. returns false.

******************************************************************************************/

function f_isNumber(str)

{

	nstr = '0123456789';

    err = 0;

    for (f=0;f<str.length;f++){

      if (nstr.indexOf(str.charAt(f)) == -1) err++;

    }

    if (err!=0) return false;

    else return true;

}



/******************************************************************************************

Function Name : f_isFloatNumber

Input : String 

Output : true or false

Description : This function returns true if string is numeric o.w. returns false.

******************************************************************************************/

function f_isFloatNumber(sStr)

{

var msStr = "0123456789.";

var d1 = sStr.indexOf(".");

var d2 = sStr.lastIndexOf(".");



if ((d1 >= 0 && d2 >= 0) && d1 != d2)

{

return false;

}

for (i=0;i<sStr.length;i++)

{

if ( msStr.indexOf(sStr.charAt(i)) == -1 )

{

return false; // Not Numeric....

}

}

return true; // string is Numeric....

}




/******************************************************************************************

Function Name : f_isValidPhone

Input : String i.e. an email address

Output : true or false

Description : This function returns true if email id is valid o.w. returns false.

******************************************************************************************/

function IsValidphone(Phone)

{

 var list="0123456789- + _.()";

  var str = Phone

  if(str.indexOf(' ')==0) return false;

  for(var i=0; i<str.length; i++){

	if(list.indexOf(str.charAt(i))<0){      

      return false;

	}

   }

	return true;

 }



function IsValidName(Name)

{

  var list="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz ";

  var str = Name

  if(str.indexOf(' ')==0) return true;

  for(var i=0; i<str.length; i++){

	if(list.indexOf(str.charAt(i))<0){     

      return true;

	}

   }

	return false;

 }

 

/******************************************************************************************

Function Name : Check_email

Input : String i.e. an email address

Output : true or false

Description : This function returns true if email id is valid o.w. returns false.

******************************************************************************************/

function Check_email(emailStr) 

{

	var emailPat=/^(.+)@(.+)$/

	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"

	var validChars="\[^\\s" + specialChars + "\]"

	var quotedUser="(\"[^\"]*\")"

	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/

	var atom=validChars + '+'

	var word="(" + atom + "|" + quotedUser + ")"

	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")

	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

	var matchArray=emailStr.match(emailPat)

	

	if (matchArray==null) 

	{  

		//alert("Email address seems incorrect (check @ and .'s)")

		return false

	}

	var user=matchArray[1]

	var domain=matchArray[2]

	if (user.match(userPat)==null) 

	{

	    //alert("The username doesn't seem to be valid email.")

	    return false

	}

	var IPArray=domain.match(ipDomainPat)

	if (IPArray!=null) 

	{  

		  for (var i=1;i<=4;i++) 

		  {

		    if (IPArray[i]>255) 

			{

		       // alert("Destination IP address is invalid!")

				return false

		    }

	    }

	    return true

	}

	var domainArray=domain.match(domainPat)

	if (domainArray==null) 

	{

		//alert("The domain name doesn't seem to be valid.")

	    return false

	}

	var atomPat=new RegExp(atom,"g")

	var domArr=domain.match(atomPat)

	var len=domArr.length

	if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) 

	{   

	   //alert("The address must end in a three-letter domain, or two letter country.")

	   return false

	}

	if (len<2) 

	{

	   var errStr="This address is missing a hostname!"

	  // alert(errStr)

	   return false

	}

	return true;

}

/******************************************************************************************/







function checkName()

{

	var lstrpath=document.contactus;

	var rstr=true;

	var name=document.getElementById("name");

	name.className="nomessage";

 if(f_isEmpty(lstrpath.yourname.value)){

	name.innerHTML="Please Enter First Name <br/>";

	name.className="message";

	rstr=false;

 }

 else if(IsValidName(lstrpath.yourname.value)){

	name.innerHTML="Please Enter Valid First Name";

	name.className="messageInvalid";

	rstr=false;

 }

 return rstr;

}

function checkLastName()

{

	var lstrpath=document.contactus;

	var rstr=true;

	var name=document.getElementById("name");

	var lastname=document.getElementById("lastname");

	var email=document.getElementById("email");

	var comments=document.getElementById("comments");

	lastname.className="nomessage";

 if(f_isEmpty(lstrpath.yourlastname.value)){

	lastname.innerHTML="Please Enter Your Last Name<br/>";

	lastname.className="message";

	rstr=false;

 }

 else if(IsValidName(lstrpath.yourlastname.value)){

	lastname.innerHTML="Please Enter Valid Last Name";

	lastname.className="messageInvalid";

	rstr=false;

 }

 return rstr;

}

function checkeMail()

{

	var lstrpath=document.contactus;

	var rstr=true;

	var name=document.getElementById("name");

	var lastname=document.getElementById("lastname");

	var email=document.getElementById("email");

	var comments=document.getElementById("comments");

	email.className="nomessage";

 if(f_isEmpty(lstrpath.youremail.value)){

	email.innerHTML="Please Enter Your Email <br/>";

	email.className="message";

	rstr=false;

 }

 else if(!Check_email(lstrpath.youremail.value)){

	email.innerHTML="Please Enter Valid Email";

	email.className="messageInvalid";

	rstr=false;

 }

 return rstr;

}

function checkComments()

{

	var lstrpath=document.contactus;

	var rstr=true;

	var name=document.getElementById("name");

	var lastname=document.getElementById("lastname");

	var email=document.getElementById("email");

	var comments=document.getElementById("comments");

	comments.className="nomessage";

 if(f_isEmpty(lstrpath.yourcomments.value)){

	comments.innerHTML="Please Enter Your Comments <br/>";

	comments.className="message";

	rstr=false;

 }

/* else if(IsValidName(lstrpath.yourcomments.value)){

	comments.innerHTML="Please Enter Valid Comments";

	comments.className="messageInvalid";

	rstr=false;

 }*/

 return rstr;

}

function validate()

{

	

	var rstr=true;

	var loading = document.getElementById("loading");

	if(rstr) rstr=checkName(); else checkName();

	if(rstr) rstr=checkLastName(); else checkLastName();

	if(rstr) rstr=checkeMail(); else checkeMail();

	if(rstr) rstr=checkComments(); else checkComments();

	if(rstr)

	{

		loading.className="loading";

	}



 return rstr;



}





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