window.onresize = setBodySize;

function setBodySize() {
	if (document.getElementById) {
		var iHeight = getBrowserHeight() - 71 - 40;
		document.getElementById("body").style.height = iHeight + "px";
	}
	return true;
}

function getBrowserHeight(){
	if (window.innerHeight) {
        return window.innerHeight;
	}  
	else if (document.documentElement && document.documentElement.clientHeight != 0) {
        return document.documentElement.clientHeight;
	}
	else if (document.body) {
		return document.body.clientHeight;
	}
    
	return 0;
}