function checkfield1()
{
if(document.getElementById('name').value=='')
{
alert("Please enter your name");
document.getElementById('name').focus();
return false;
}


if(document.getElementById('phone').value=='')
{
alert("Please enter your phone");
document.getElementById('phone').focus();
return false;
}

if (!/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(document.getElementById("email").value))
{
alert("Please enter valid email address"); 
document.getElementById("email").focus();
return false;
}


if(document.getElementById('message').value=='')
{
alert("Please enter your message");
document.getElementById('message').focus();
return false;
}

if(document.getElementById('comments').value=='')
{
alert("Please enter your comment");
document.getElementById('comments').focus();
return false;
}

}