function openWin(src)
{
    myWin= open(src, "displayWindow", 
    "width=400,height=500,status=no,toolbar=no,menubar=no");
}
function openWin1(src)
{
    myWin= open(src, "displayWindow", 
    "width=400,height=800,status=no,toolbar=no,scrollbars=yes,menubar=no");
}

NumberOfImagesToRotate = 6;

FirstPart = '<img src="img/top1';
LastPart = '.png" height="202" width="451">';

function printImage() 
{
var r = Math.ceil(Math.random() * NumberOfImagesToRotate);
document.write(FirstPart + r + LastPart);
}