rotate image through javascript

var i=5;
function imgrotate()
{
i=i+1;
if(i%5==0)
{
document.getElementById("img1").src="http://localhost:1096/WebSite1/img/delete.jpg";
}
if(i%5==1)
{
document.getElementById("img1").src="http://localhost:1096/WebSite1/img/arr.jpg";
}
if(i%5==2)
{
document.getElementById("img1").src="http://localhost:1096/WebSite1/img/edit.jpg";
}
if(i%5==3)
{
document.getElementById("img1").src="http://localhost:1096/WebSite1/img/print.gif";
}
if(i%5==4)
{
document.getElementById("img1").src="http://localhost:1096/WebSite1/img/warning.gif";
}
window.setTimeout("imgrotate()","1000");
}
window.setTimeout("imgrotate()","1");