function resizeImg()
{
    for (var index = 0; index < document.getElementsByName("productPic").length; index++) {
        var widthRestriction = 450;
        var heightRestriction = 450;
        
        if (document.getElementsByName("productPic")[index].width > widthRestriction) {
            document.getElementsByName("productPic")[index].width = widthRestriction;
        } else if (document.getElementsByName("productPic")[index].height > heightRestriction) {
             document.getElementsByName("productPic")[index].height = heightRestriction;
        }
    }
}