var _content_box = "content";
function initMain(){
	var _div = document.getElementsByTagName("div");
	for(var i=0; i<_div.length; i++){
		if (_div[i].className.indexOf(_content_box) !=-1) {
			var _box = _div[i].getElementsByTagName("div")[0];
			if(_box){
				_div[i].parentNode.parentNode.style.width = _box.offsetWidth + "px";
			}
		}
	}
}
if (window.addEventListener) window.addEventListener("load", initMain, false);
else if (window.attachEvent && !window.opera) window.attachEvent("onload", initMain);