// JavaScript Document
    function isrequired(obj,retval){
    
         if (retval) {
           retval=false
           for (var i=0; i<obj.value.length; i++) {
              if (obj.value.substring(i,i+1) !=" ") {
        		retval=true
        		break
        	}
           }   
   
         }
         return retval
        }
    ;
    
    function checkData(){

    	if (!isrequired(document.forms[0].email, true)) {
    	 alert("Please enter an email address.")
    	 document.forms[0].email.focus()
         return false}
         
	    var checkExternal = document.forms[0].email.value.indexOf("@",1)
	    if (checkExternal == -1){
		 alert("Your Email Address is not in the correct format.\n\nYou must enter your email address in the following format:\n\n example@domainname.com")
		 document.forms[0].email.focus()
		 return false}  
                            
         if (!isrequired(document.forms[0].attr_43984, true)) {
    	 alert("Please enter your First Name.")
    	 document.forms[0].attr_43984.focus()
         return false} 
         
		 if (!isrequired(document.forms[0].attr_43985, true)) {
    	 alert("Please enter your Last Name.")
    	 document.forms[0 ].attr_43985.focus()
         return false} 

         if (!isrequired(document.forms[0].attr_43989, true)) {
    	 alert("Please enter your Zip Code.")
    	 document.forms[0 ].attr_43989.focus()
         return false}         
		 

 

    }