var pageOffset = 89;  // height of header
var content    = document.getElementById("linzag-stage-content");
var right      = document.getElementById("linzag-stage-right");

// check if content is larger than page
if (content.offsetHeight < document.body.clientHeight - pageOffset) {
	content.style.height = (document.body.clientHeight - pageOffset) + "px";
}

// check if right menu is smaller than content
if (content.offsetHeight > right.offsetHeight) {
	right.style.height = (content.offsetHeight) + "px";
}