function ChangeColor(obj, color) {
	if ( 'undefined' != typeof(obj) ) {
			obj.style.backgroundColor = color;
	}
}

/*// 检测网页是否可访问
function PingUrlPage(UrlPage)
{
		var v = window.navigator.appVersion;
    var n = parseInt(v.substr(v.indexOf("MSIE") + 5));
    if (window.navigator.appName != "Microsoft Internet Explorer" || n < 5) return true;	// 如果客户端不是IE5.0以上,返回true
    result = false;
    xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
    xmlhttp.open("GET", UrlPage, false);
    xmlhttp.send();
    if(xmlhttp.status == 200) result = true;
		delete xmlhttp;
		return result
}*/