[nikita.mmf]

Посмотрите на jquery 1.6.4

// Evaluates a script in a global context
	// Workarounds based on findings by Jim Driscoll
	// [url]http://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context[/url]
	globalEval: function( data ) {
		if ( data && rnotwhite.test( data ) ) {
			// We use execScript on Internet Explorer
			// We use an anonymous function so that context is window
			// rather than jQuery in Firefox
			( window.execScript || function( data ) {
				window[ "eval" ].call( window, data );
			} )( data );
		}
	},