There seems to be a conflict with the menu and one of the other scripts on your page, at least in IE. There are quite a few scripts on your page, so it's hard to tell right off the bat which one is the culprit, but the error returned in IE is:
Code:
Message: Object doesn't support this property or method
Line: 4821
Char: 5
Code: 0
URI: http://www.samleisure.co.uk/wordpress/wp-includes/js/prototype.js?ver=1.6.1
Message: Object doesn't support this property or method
Line: 123
Char: 2
Code: 0
URI: http://www.samleisure.co.uk/wordpress/wp-content/themes/LSO_WPv0.1/ddsmoothmenu.js
Message: Object doesn't support this property or method
Line: 21
Char: 6
Code: 0
URI: http://www.samleisure.co.uk/wordpress/wp-content/plugins/wp-e-commerce/js/wp-e-commerce.js?ver=3.7.58
First thing to see is if the conflict is with the prototype library and the jquery library on your page. Inside ddsmoothmenu.js, near the top, try adding the following line in red:
Code:
jQuery.noConflict()
var ddsmoothmenu={
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