Indulge me, I'm fighting with IE.
We have a set of pages that work nicely in IE8 (intranet). The company decided upgrading directly to IE10.
What is the html code to force a page to use I5 Quirks Mode (this is the mode it works). I've tried with :
<meta http-equiv="X-UA-Compatible" content="IE=IE5" />
But IE10 put's the page in quirks mode (not IE5). You open the debugger (F12) and there you can change the document mode and the browser mode. The important is to set the document mode in IE5 quirks
Some help is welcomed