var sohuAD=new Array();
var a = new Array();
var b = new Array();
var c = new Array();
var adNum=0;
sohuAD[1] ='img/1.jpg';
sohuAD[2] ='img/2.jpg';
sohuAD[3] ='img/3.jpg';
sohuAD[4] ='img/4.jpg';
var preloadedimages=new Array();
for (i=1;i<sohuAD.length;i++){
	preloadedimages[i]=new Image();
	preloadedimages[i].src=sohuAD[i];
}

function setTransition()
{
	if (document.all)
	{
		sohuADrush_1.filters.revealTrans.Transition=30;
		sohuADrush_1.filters.revealTrans.apply();
	}
}

function playTransition()
{
	if (document.all) {
    sohuADrush_1.filters.revealTrans.play();
  }
}

function nextAd()
{
	if(adNum<4)adNum++ ;
	else adNum=1;
	setTransition();
	document.images.sohuADrush_1.src=sohuAD[adNum];
	playTransition();
	displayStatusMsg();
	theTimer=setTimeout("nextAd()", 5000);
}

function displayStatusMsg()
{
	document.returnValue = true;
}