ÿþfunction checkContactInfo()

{



var firstName = document.getElementById('txtFirstName').value;

var lastName  = document.getElementById('txtLastName').value;

var email     = document.getElementById('txtEmail').value;

var comments  = document.getElementById('txtComments').value;

var phone     = document.getElementById('txtPhone').value;

var fax       = document.getElementById('txtFax').value;



if(firstName == "")

{

alert('Please specify your first name!');

document.getElementById('txtFirstName').focus();

return false

}



if(lastName == "")

{

alert('Please specify your last  name!');

document.getElementById('txtLastName').focus();

return false

}



if(email == "")

{

alert('The email field can not be left blank!');

document.getElementById('txtEmail').focus();

return false

}



if (echeck(email)==false)

{

document.getElementById('txtEmail').focus();

return false

}





if (isNaN(phone) && phone != "")

{

alert('Invalid phone number!');

document.getElementById('txtPhone').focus();

return false

}



if (isNaN(fax) && fax != "")

{

alert('Invalid fax number!');

document.getElementById('txtFax').focus();

return false

}



if(comments == "")

{

alert('Please let us know how we can service you by either entering a question or comment in the field below!');

document.getElementById('txtComments').focus();

return false

}



return true;

}





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 ID")

return false

}



if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){

alert("Invalid E-mail ID")

return false

}



if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){

alert("Invalid E-mail ID")

return false

}



if (str.indexOf(at,(lat+1))!=-1){

alert("Invalid E-mail ID")

return false

}



if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){

alert("Invalid E-mail ID")

return false

}



if (str.indexOf(dot,(lat+2))==-1){

alert("Invalid E-mail ID")

return false

}

		

if (str.indexOf(" ")!=-1){

alert("Invalid E-mail ID")

return false

}

return true					

}