Untitled

<html>
<title>
question 2
</title>
</head>
<script type ="text/javascript">
//check fields
function check(input)
{

	if(input.value.length == 0)
	{
		//check if the empty value = first name
		if(input.id == "firstname")
		{
			alert("Enter a first name please ");
		}
		if (input.id == "lastname")
		{
			alert("Enter a Last name please ");
		}

		if (input.id == "address")
		{
			alert("Enter a address please ");
		}
		if (input.id == "state")
		{
			alert("Enter a state");
		}
		if (input.id == "zip")
		{
			alert("please enter a zip");
		}


	}

}
function checkZip()
{
	//get the zip data
	var zipLen = document.getElementById("zip").value.length;
	var zip = document.getElementById("zip").value;
	var min =00000;
	var max = 99999;

	if(zipLen !=5)
	{
		alert("Sorry Please Enter exactly 5 digits");
	}
	if(isNaN(zip))
	{
		alert("Please Enter a number ");
	}
	if(!((zip > min) && (zip<max)))
	{
		alert("The Zip code must be over 00000 and below 99999");
	}

}

function checkAlpha()
{
	var exp = /^[a-zA-Z]+$/;
	var aLen = document.getElementById("firstname").value.length;
	if(!(document.getElementById("firstname").value.match(exp)))
	{
			alert("Sorry the first name field needs to be letters !");

	}
	else if(aLen < 3)
	{
		alert("Sorry the Name has to be greater than two letters");
	}
}

</script>

</head>
<body>
<!-- text input! --->
<form name = fom1 onsubmit="">
<fieldset><legend align ='left'><b>Personal Information</b></legend>
<table cellpadding ='2'>
<tr>
	<td>
	First Name :
	</td>
	<td>
	<input type = "text" id = "firstname" onblur ="check(document.getElementById('firstname'));checkAlpha();"/>
	</td>
	<td>
	Last Name :
	</td>
	<td>
	<input type = 'text' id = 'lastname' onblur ="check(document.getElementById('lastname'));"/>
	</td>
	<td>
</tr>
<tr>
	<td>
	Address :
	</td>
	<td>
	<input type = "text" id = "address" onblur ="check(document.getElementById('address'));"/></br>
	</td>
	<td>
	State :
	</td>
	<td>
	<input type = 'text' id ='state'onblur ="check(document.getElementById('state'));"/>
	</td>
	<td>
	Zip :
	</td>
	<td>
	<input type = "text" id = "zip" onblur ="check(document.getElementById('zip'));checkZip();"/>
	</td>
	<td>
	<input type ="submit" value ="submit" />
	</td>
</tr>
</table>
</fieldset>
</form>
</table>
</fieldset>
</body>
</html>