window.onload = frameHeight;
window.onresize = frameHeight;

function frameHeight(){
	var winHeight = 100-28/document.body.clientHeight*100+'%';
	document.getElementById('contents').style.height=winHeight;
	var winHeight2 = 100-95/document.body.clientHeight*100+'%';
	document.getElementById('main_body').style.height=winHeight2;
}