(PHP&JavaScript) a href add button won't work on Mozilla but works on IE and Google
===

I am not really certain if the add button is responsible for the problem since it is working on other browsers perfectly. I hope you could help me in someways. Thank you. By the way, here's the complete .php code.

    <html>
    
    <head>
    
    <LINK REL=StyleSheet HREF="addOfficerStyle.css" TYPE="text/css" MEDIA=screen>
    
    <script type="text/javascript">
    	function validateForm(action)
    		{
    			var lname=document.forms["validation"] ["lname"].value;
    			var fname=document.forms["validation"] ["fname"].value;
    			var mname=document.forms["validation"] ["mname"].value;
    			var address=document.forms["validation"] ["address"].value;
    			var contact=document.forms["validation"] ["contact"].value;
    			
    				if (lname==null || lname=="" || fname==null || fname=="" || mname==null || mname=="" || address==null || address=="" || contact==null || contact=="")
    					{
    					alert("Fill all required fields");
    					return false;
    					}
    				else{
    					form = document.getElementById('userLocation');
    					form.action = action;
    					form.submit();
    					}
    		}
    				
    			
    	function numeric(e)
    		{
    			var unicode=e.charCode ? e.charCode : e.keyCode;
    				if (unicode==8 || unicode==9 || (unicode >=48 && unicode <=57))
    					{
    					return true;
    					}
    				else
    					{
    					return false;
    					}
    		}
    
    	function inputLimiter(e,allow)
    		{
    			var AllowableCharacters = '';
    
    				if (allow == 'Letters'){AllowableCharacters=' ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';}
    			
    			var k = document.all?parseInt(e.keyCode): parseInt(e.which);
    				if (k!=13 && k!=8 && k!=0)
    					{
    						if ((e.ctrlKey==false) && (e.altKey==false))
    							{
    								return (AllowableCharacters.indexOf(String.fromCharCode(k))!=-1);
    							}
    						else
    							{
    								return true;
    							}
    					} 
    				else
    					{
    						return true;
    					}
    		} 
    </script>
    
    </head>
    
    <body onunload="opener.location=('PromoOfficer.php')">
    
    <br><br>
    
    <form  id="userLocation" name="validation" method="post" onsubmit="return validateForm()">
     	<div id="tableAlign">
    	 <table>
    	 	<tr>
    			<td><b>ADD: Promo Officer</td></b>
    		</tr>
    		<tr> 
    			  <td>Last name:</td>    <td><input type="text" name="lname" maxlength="20" onkeypress="return inputLimiter(event,'Letters')" /></td>
    		</tr>				 
    		<tr>
    			  <td>First name:</td>   <td><input type="text" name="fname" maxlength="20" onkeypress="return inputLimiter(event,'Letters')" /></td>
    		</tr>	  
    		<tr>	
    			  <td>Middle name:</td>  <td><input type="text" name="mname" maxlength="20" onkeypress="return inputLimiter(event,'Letters')" /></td>
    		</tr>
    		<tr>
    			  <td>Address:</td>     <td><input type="text" name="address" maxlength="50" /></td>
    		</tr>
    		<tr>
    			  <td>Contact:</td>      <td><input type="text" name="contact" maxlength="11" onkeypress="return numeric(event);" /></td>
    		</tr>
    		<tr>
    			  <td>User Type:</td>	 <td><input type name = "usertype" readonly = "true" value = "Promo Officer"></td>
    		</tr>
    	</table>
    	</div>
    <div id="addBtn">	
    		<a href="#" onclick="javascript: validateForm(action);return false;"><img src="images/add.png" height="27" width="60"></a>
    </div>		
    <!-- PHP -->
    <?
    	include('global.php');
    	
    	
    	if(isset($_REQUEST['salesID']))
    		$pID = $_REQUEST['salesID'];
    	else
    		$pID = "";
    			
    	if(isset($_REQUEST['lname']))
    		$lname = $_REQUEST['lname'];
    	else
    		$lname = "";
    		
    	if(isset($_REQUEST['fname']))
    		$fname = $_REQUEST['fname'];
    		
    	if(isset($_REQUEST['mname']))
    		$mname = $_REQUEST['mname'];
    		
    	if(isset($_REQUEST['address']))
    		$address = $_REQUEST['address'];
    		
    	if(isset($_REQUEST['contact']))
    		$contact = $_REQUEST['contact'];
    	
    	if(isset($_REQUEST['usertype']))
    		$usertype = $_REQUEST['usertype'];
    	
    			if($_POST)
    				{
    	
    					$query = "INSERT INTO promoofficerform SET ";
    					$query = $query."LastName='".$lname."', ";
    					$query = $query."FirstName='".$fname."', ";
    					$query = $query."MiddleName='".$mname."', ";
    					$query = $query."Address='".$address."', ";
    					$query = $query."Contact='".$contact."', ";
    					$query = $query."UserType='".$usertype."' ";
    					//$query = $query."WHERE PromoNameID='".$pID."'";	
    					//echo $query;
    					ExecuteQuery($query);
    					echo "<script type=\"text/javascript\">
    						<!--
    						window.close();
    						//-->
    						</script>";
    				}
    ?>
    
    <!-- EndOfPHP -->
    
    </form>
    
    </body>
    
    </html>