jquery not loading on IE

jquery not loading on IE

Hi 

I have a project using jquery 1.7.1 and one of my pages is not working 

for testing I edited my $(document).ready function with a simple alert in it : 

$(document).ready(function() {
alert('here');
});

but it is not working only in IE ( 9, 10 and 11) with compatibility mode 

is there any parameter that I can set in pages for this kind of compatibility ?

this page works on chrome and firefox 

my guess is that all jquery fetarues for this page are not working on IE not only document ready one ...

thks !!
Érico