var ads = 3;
//var ran = Math.random();
//var ad = Math.round(ran * (ads-1))+1;

var nowtimes = new Date()
var sec = nowtimes.getSeconds()
var ad = sec % ads;
ad +=1;



	if (ad==1) {
	SA_LINK="article/index.asp?classid=3&nclassid=4";
	SA_TITLE="公司纪事 - 工程案例";
	SA_URL="http://www.origincn.com/ad/image/LogoProjectSample.gif";
	SA_WIDTH="180";
	SA_HEIGHT="80";
	SA_TYPE = "1";
	}

	if (ad==2) {
	SA_LINK="HowtoBuy.asp";
	SA_TITLE="如何购买";
	SA_URL="http://www.origincn.com/ad/image/LogoHowtoBuy.gif";
	SA_WIDTH="180";
	SA_HEIGHT="80";
	SA_TYPE = "1";
	}

	if (ad==3) {
	SA_LINK="Online_Contact.asp";
	SA_TITLE="建议反馈";
	SA_URL="http://www.origincn.com/ad/image/LogoFeedback.gif";
	SA_WIDTH="180";
	SA_HEIGHT="80";
	SA_TYPE = "1";
	}


	if (SA_TYPE=="1")
	{
		document.write('<a href=\"' + SA_LINK + '\" target=\"_top\">');
		document.write('<img src=\"' + SA_URL + '\" width=\"' + SA_WIDTH + '\" height=\"' + SA_HEIGHT + '\"');
		document.write('alt=\"' + SA_TITLE + '\" border=0></a>');
	}
	else 
	{
		document.write('<object classid=\"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000\" codebase=\"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0\" width=\"' + SA_WIDTH + '\" height=\"' + SA_HEIGHT + '\">');
		document.write('<param name=movie value=\"' + SA_URL + '\">');
		document.write('<param name=quality value=high>');
		document.write('<param name=menu value=false>');
		document.write('<embed src=\"' + SA_URL + '\" quality=high pluginspage=\"http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash\" type=\"application/x-shockwave-flash\" width=\"' + SA_WIDTH + '\" height=\"' + SA_HEIGHT + '\">');
		document.write('</embed> ');
		document.write('</object>');
	}