/* assuming img1 can be changed in some other function not shown */ 
function fixImgBr (){ 
	var prev=-1, adj; 
	var oOuter = document.getElementById('content-mid');
	var oBag = document.getElementById('study-push');
	var Bag2Ht = document.getElementById('study-books').offsetHeight;
	
	adj = oOuter.offsetHeight - Bag2Ht; 
	if ($.browser.msie) adj -= 200;
	if (prev !==adj) oBag.style.height = adj +"px"; 
	prev= oOuter.offsetHeight -Bag2Ht; 
} 

$(document).ready(function() {
	fixImgBr();
});