var TimeOut=5000;              //切换时间(单位毫秒);
var StartType="onmouseover";   //缩略图触发动作
var theTimer;
var imgUrl=new Array();
var imgSUrl=new Array(); 
var imgLink=new Array();
var imgAlt=new Array();
var adNum=0;



function changeimg(n){adNum=n;window.clearInterval(theTimer);adNum=adNum-1;nextAd();}

//function goUrl(){window.open(imgLink[adNum],'_blank');}

//var count=0;
//for(i=1;i<imgUrl.length;i++){
//if((imgUrl[i]!="")&&(imgLink[i]!="")&&(imgAlt[i]!="")){count++;}else{break;}
//}

function playTran(){
if(document.all){document.images.imgInit.filters.revealTrans.play();}
}

var key=0;

function nextAd(){
if(adNum<(imgUrl.length-1)){adNum++;}else{adNum=1;}
if(key==0){key=1;}else if(document.all){imgInit.filters.revealTrans.Transition=23;document.images.imgInit.filters.revealTrans.apply();playTran();}
document.images.imgInit.src=imgUrl[adNum];
document.images.imgInit.alt=imgAlt[adNum];
document.getElementById('frs_'+adNum).className="onn";
for(var i=1;i<=4;i++){
if(i!=adNum){document.getElementById('frs_'+i).className="";}
}
document.getElementById('imgLink').href=imgLink[adNum];
//nextTxt(adNum);
theTimer=setTimeout("nextAd()",TimeOut);
}

function nextTxt(cc){
var w;
for(w=1;w<imgUrl.length;w++){
document.getElementById('focusContent'+w).style.display="none";
}
document.getElementById('focusContent'+cc).style.display="";
}

function documenttext(){
document.write('<table width="345" border="0" cellspacing="0" cellpadding="0">\n');
document.write('    <tr>\n');
document.write('     <td>');
document.write('<a id="imgLink" href="'+imgLink[1]+'" target="_blank"><img width="336" height="385" style="FILTER: revealTrans(duration=1,transition=5);"  src="javascript:nextAd()" name="imgInit" alt="'+imgAlt[1]+'" border="0" /></a>');
document.write('</td></tr>\n');
document.write('     <tr>\n');
document.write('     <td valign="bottom" height="100" class="ona">');
for(var i=1;i<imgUrl.length;i++){
document.write('<a id="frs_'+i+'" href="javascript:;" '+StartType+'="javascript:changeimg('+i+');" title="'+imgAlt[i]+'"><img width="60" height="82"  src="'+imgSUrl[i]+'" alt="'+imgAlt[i]+'" border="0" /></a>');
}
document.write('     </td>\n');
document.write('    </tr>\n');
document.write('</table>\n');
}


//showbh('p3_tit','p3bh','p3_titbg',1,4) 1--类样式，2--变换内容ID，3--变换样式ID，4--哪个，5--总数
function showbh(css,contentid,cssid,select_n,n) {
for (i = 1; i <= n; i++) {
var intro = document.getElementById(contentid + i);
var cha = document.getElementById(cssid);
intro.style.display = "none";


if (i == select_n) {
intro.style.display = "block";
cha.className=css + i;
}

}
}



function chklogin(thisobj){
	var username=thisobj.username.value;
	var userpass=thisobj.userpass.value;
	if(!/^(\w){4,16}$/g.test(username)){
		alert("请输入合法规范的用户名！");
		return false;
	}
	if(!/^(.){6,16}$/g.test(userpass)){
		alert("请输入格式正确的密码！");
		return false;
	}
	for (var i=0;i<userpass.length;i++){
		if(userpass.charCodeAt(i)<33 || userpass.charCodeAt(i)>126){
			alert("请输入格式正确的密码！");
			return false;
		}
	}
	return true;
}