function setContentHeight() {
	var leftH = document.getElementById('left').offsetHeight;
	if(leftH < 421) {
		leftH=420;
		document.getElementById('left').style.height=420+'px';
	}
	var contentHeight = leftH;
	var contentTextHeight = leftH-17;
    document.getElementById('content').style.height=contentHeight+'px';
	document.getElementById('content_text').style.height=contentTextHeight+'px';
}
function setContentHeight2() {
	var leftH = document.getElementById('left').offsetHeight;
	if(leftH < 421) {
		leftH=420;
		document.getElementById('left').style.height=420+'px';
	}
	var contentHeight = leftH;
	var contentTextHeight = leftH-17;
    document.getElementById('content').style.height=contentHeight+'px';
	
}