Allow for Field Validators to handle None values, fixed issue 1183, thanks Joe Barnhart

applications/welcome/static/css/web2py.css

@@ -115,6 +115,10 @@ div.flash {
     z-index:2000;
 }
 
+div.flash #closeflash{color:inherit; float:right;}
+.ie-lte7  div.flash
+#closeflash{color:expression(this.parentNode.currentStyle['color']);float:none;position:absolute;right:4px;}
+
 div.flash:hover { opacity:0.25; }
 
 div.error_wrapper {display:block}

applications/welcome/static/js/web2py.js

@@ -55,7 +55,7 @@ function web2py_event_handlers() {
 jQuery(function() {
    var flash = jQuery('.flash');
    flash.hide();
-   if(flash.html()) flash.append('<span style="float:right;">&times;</span>').slideDown();
+   if(flash.html()) flash.append('<span id="closeflash">&times;</span>').slideDown();
    web2py_ajax_init(document);
    web2py_event_handlers();
 });