function validation()

{

	 

 var d=document.form1;

 

 

 if(d.firstname.value =="")

 {

  alert("Please Enter your First Name");

  d.firstname.focus();

  return false;

 }

  if(d.lastname.value =="")

 {

  alert("Please Enter your Last Name");

  d.lastname.focus();

  return false;

 }
 
  if(d.phonenumber.value =="")

 {

  alert("Please Enter your Phone Number");

  d.phonenumber.focus();

  return false;

 }
 
 
 
 
 

 



 if(d.email.value=='')

	{

	

		alert("Please enter your E-mail");

		d.email.focus();

		return false;

	}

	

	if(checkingEmail(d.email.value)==false)

	   {

		 alert("Invalid Email, Please re-enter");

		 d.email.focus();

		 return false;

	   }

 

 return true;

}



function checkingEmail(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) {

		return false

	}

	var user=matchArray[1]

	var domain=matchArray[2]

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

	    return false

	}

	var IPArray=domain.match(ipDomainPat)

	if (IPArray!=null) {

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

		    if (IPArray[i]>255) {

				return false

		    }

	    }

	    return true

	}

	var domainArray=domain.match(domainPat)

	if (domainArray==null) {

		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>4) {

		return false

	}

	if (len<2) {

	   return false

	}

	return true;

}	

function validatephone(xxxxx) {

	 var maintainplus = '';

 	var numval = xxxxx.value

 	if ( numval.charAt(0)=='+' ){ var maintainplus = '+';}

 	curphonevar = numval.replace(/[\\A-Za-z!"£$%^&*+_={};:'@#~,.¦\/<>?|`¬\]\[]/g,'');

 	xxxxx.value = maintainplus + curphonevar;

 	var maintainplus = '';

 	xxxxx.focus;

}