//'首页左侧中部位置
var d_var, date_var, strTitle, strImg
	//date_var = new Date();
	//d_var = date_var.getDate();
	d_var=Math.floor(Math.random()*30);
	switch (d_var)
{
	case 0:
		strTitle="造价文件－最新收录"
		strImg="/ads/img/banner238_esfile.gif"
		strURL="/Filesrch/esfile/newlist.asp?list=new"
		break;
	case 1:
		strTitle="浏览在线工作手册"
		strImg="/ads/img/banner238_handbood.gif"
		strURL="/handbook/"
	        break;
	case 2:
		strTitle="论坛－网站分值与网站共建"
		strImg="/ads/img/234webfenzhi.gif"
		strURL="/forum/view.asp?id=48"
	        break;
	case 3:
		strTitle="本站帮助－怎样获得积分"
		strImg="/ads/img/234getjifeng.gif"
		strURL="/support/?sort=help#4-how-integral"
	        break;
	case 4:
		strTitle="怎样快速浏览论坛"
		strImg="/ads/img/234quickbbs.gif"
		strURL="/forum/view.asp?id=32"
	        break;
	case 5:
		strTitle="3月起增加在线积分"
		strImg="/ads/img/234regplusjifeng.gif"
		strURL="/forum/view.asp?id=59"
	        break;
	case 6:
		strTitle="注册注意事项"
		strImg="/ads/img/234regnotes.gif"
		strURL="/forum/view.asp?id=16"
	        break;
	case 7:
		strTitle="欢迎发表评论"
		strImg="/ads/img/234tonotes.gif"
		strURL="/forum/view.asp?id=42"
	        break;
	case 8:
		strTitle="工程造价资料积累总体思路"
		strImg="/ads/img/234howjilei.gif"
		strURL="/article/view.asp?id=37"
	        break;
	case 9:
		strTitle="本站哪些栏目适合您？"
		strImg="/ads/img/234chanelVote.gif"
		strURL="/forum/view.asp?id=41"
	        break;
	case 10:
		strTitle="论坛关注贴汇总(201003)"
		strImg="/ads/img/234bbs_hot.gif"
		strURL="/forum/view.asp?id=67"
	        break;
	case 11:
		strTitle="本站制作－下载推荐"
		strImg="/ads/img/234bToDown.gif"
		strURL="/Filesrch/downlist.asp"
	        break;
	case 12:
		strTitle="造价文件－在线查阅"
		strImg="/ads/img/banner238_esfile.gif"
		strURL="/Filesrch/"
	        break;
	case 13:
		strTitle="论坛发贴重要声明"
		strImg="/ads/img/234bbs_note.gif"
		strURL="/forum/view.asp?id=105"
	        break;
	case 14:
		strTitle="指标定额说明CHM单机版下载"
		strImg="/ads/img/234newdown_zbchm.gif"
		strURL="/Filesrch/downlist.asp"
	        break;
	case 15:
		strTitle="石化造价网－计时包月功能"
		strImg="/ads/img/234month.gif"
		strURL="/forum/view.asp?id=471"
	        break;
	case 16:
		strTitle="石化造价网－计时包月功能"
		strImg="/ads/img/234month.gif"
		strURL="/forum/view.asp?id=471"
	        break;
	case 17:
		strTitle="石化造价网－计时包月功能"
		strImg="/ads/img/234month.gif"
		strURL="/forum/view.asp?id=471"
	        break;
	case 18:
		strTitle="上海市常用建材价格趋势"
		strImg="/ads/img/234priceline.png"
		strURL="/ExcelVBA/priceline.mht"
		break;
	case 19:
		strTitle="石油化工工程建设概算实务2003-在线浏览"
		strImg="/ads/img/234shgsbook.gif"
		strURL="/handbook/shgsbook/"
		break;
	case 20:
		strTitle="造价工具加载宏计时下载！"
		strImg="/ads/img/estools110203down.gif"
		strURL="/announce/view.asp?id=29"
		break;
	default:
		strTitle="造价工具加载宏运行环境补充说明"
		strImg="/ads/img/estools2007.gif"
		strURL="/announce/view.asp?id=30"
}
document.write("<div>");
document.write("<a title=\""+strTitle+ "\" target=\"_blank\" href=\""+strURL+"\"><img src=\""+strImg+"\" width=\"238\" height=\"60\" border=\"0\" hspace=\"0\"></a>");
document.write("</div>");