function resizeMiddle(element,heightfix) {
  var innerHeight = window.innerHeight || (window.document.documentElement.clientHeight || window.document.body.clientHeight);
  var newHeight = innerHeight-heightfix;

	browserVer = navigator.appVersion;
	if(browserVer.indexOf("MSIE 6.0") != -1) {
	  element.style.height = newHeight+"px";
  }
  else {
	  element.style.minHeight = newHeight+"px";
  }
}

window.onload = function() { resizeMiddle(document.getElementById('container_in'),784); };
window.onresize = function() { resizeMiddle(document.getElementById('container_in'),784); };