var currslid = 0;
var maxad=3;
var showmaxad=3;
var slidint;
var picarry = {};
var lnkarry = {};
var jsarray = {};
picarry[3] = "images/bigimgapp.jpg";
lnkarry[3]  = "http://www.stit.com.cn/detail.php?gid=1473";
jsarray[3]="<img id=ad3 width=162 height=58 onmouseover=\"setfoc(3)\"  onmouseout=\"playit()\" src=images/imgapp.jpg>";

//picarry[2] = "images/big0002.jpg";
//lnkarry[2]  = "http://www.stit.com.cn/detail.php?gid=1082";
//jsarray[2]="<img id=ad2 width=162 height=58 onmouseover=\"setfoc(2)\"  onmouseout=\"playit()\" src=images/0002.jpg>";

picarry[1] = "images/mv710.jpg";
lnkarry[1]  = "detail.php?gid=1432";
jsarray[1]="<img id=ad1 width=162 height=58 onmouseover=\"setfoc(1)\"  onmouseout=\"playit()\" src=images/mv710x.jpg>";

picarry[2] = "images/big0005.jpg";
lnkarry[2]  = "/activity/salegps/";
jsarray[2]="<img id=ad2 width=162 height=58 onmouseover=\"setfoc(2)\"  onmouseout=\"playit()\" src=images/0005.jpg >";

function setfoc(id){
	currslid = id;
	if (currslid>showmaxad)
	{	var tmpcurrslid=currslid;
		for(i=showmaxad;i>=1;i--){var d="divad"+i;document.getElementById(d).innerHTML = jsarray[tmpcurrslid];tmpcurrslid=tmpcurrslid-1;}
	}else{for(i=1;i<=showmaxad;i++){var d="divad"+i;document.getElementById(d).innerHTML = jsarray[i];}}
	//for(i=1;i<=maxad;i++){document.getElementById("ad"+i).className = "";}
	document.getElementById("ad"+id).className ="curr";
	document.getElementById("showadlink").href = lnkarry[id];
if (document.all)	
{showadpic.filters[0].Apply();showadpic.filters[0].transition=21;showadpic.filters[0].Play();
}document.getElementById("showadpic").src = picarry[id];	
	stopit();
}
function playnext(){if(currslid==maxad){currslid = 1;}else{currslid++;}setfoc(currslid);playit();}
function playit(){slidint = setTimeout(playnext,3500);}
function stopit(){clearTimeout(slidint);}
function goprev(){
	if(currslid>1){var p=currslid-1;setfoc(p);playit();}
	else{setfoc(maxad);playit();}
}
function gonext(){if(currslid<maxad){var n=currslid+1;setfoc(n);playit();}else{setfoc(1);playit();}}
window.onload = function(){	playnext();}