function cadBlocksCheck() 
{

        if (document.registration.Name.value == "") 
        {
        alert("Please enter your name.");
        document.registration.Name.focus();
        document.registration.Name.select();
        return false;
        }
  
        if (document.registration.Address.value == "") 
        {
        alert("Please enter your address.");
        document.registration.Address.focus();
        document.registration.Address.select();
        return false;
        }
        
        if (document.registration.City.value == "") 
        {
        alert("Please enter your city.");
        document.registration.City.focus();
        document.registration.City.select();
        return false;
        }
        
	
        
	thePhone = document.registration.Phone.value;
	     invalidChars = "abcdefghijklmnopqrstuvwxyz"	
	     
        if (thePhone.length < 10) { 
        alert ("Please enter your area code and telephone number");
        document.registration.Phone.focus();
        document.registration.Phone.select();
        return false;
        }
        for (i = 0; i < invalidChars.length; i++) {
          badChar = invalidChars.charAt(i)
          if (thePhone.indexOf(badChar,0) > 0) {
              alert ("There are no letters in a telephone number - numbers only please");
              document.registration.Phone.focus();
              document.registration.Phone.select();
              return false;
        	    }
        }
 
	if (document.registration.Email.value.indexOf("@") == -1 ||
            document.registration.Email.value == "") 
        {
        alert("Please include a valid email address.");
        document.registration.Email.focus();
        document.registration.Email.select();
        return false;
        }

      
   theProj = document.registration.Describe.value;
        if (theProj.length < 20) {
        alert("Please describe your project in greater detail");
        document.registration.Describe.focus();
        document.registration.Describe.select();
        return false;
        }
        if (!document.registration.SendCD.checked) {
        alert("Please tell us if you would like Arcways' CD");
        document.registration.SendCD[0].focus();
        return false;
        }
        
}