$(document).ready(function() {
    ResizeProductImage();
});

//zera o width e height da imagem
function ResetImageSize() {
    var imageToResize = $('#ProductImage');
    imageToResize.css("width", null);
    imageToResize.css("height", null);
}
function ResizeProductImage() {    
    if (typeof (productImageResizeToWidth) == "undefined" || typeof (productImageResizeToHeight) == "undefined") {
        alert("Erro ao carregar variaveis de resize");
        return;
    }

    var imageToResize = $('#ProductImage');

    var maxWidth = productImageResizeToWidth; // Max width for the image
    var maxHeight = productImageResizeToHeight;    // Max height for the image

    var ratio = 0;  // Used for aspect ratio
    var width = imageToResize.width();    //Current image width
    var height = imageToResize.height();  //Current image height


    // Check if the current width is larger than the max
    if (width > maxWidth) {
        ratio = maxWidth / width;   // get ratio for scaling image
        imageToResize.css("width", maxWidth); // Set new width
        imageToResize.css("height", height * ratio);  // Scale height based on ratio
        height = height * ratio;    // Reset height to match scaled image
        width = width * ratio;    // Reset width to match scaled image
    }

    // Check if current height is larger than max
    if (height > maxHeight) {
        ratio = maxHeight / height; // get ratio for scaling image
        imageToResize.css("height", maxHeight);   // Set new height
        imageToResize.css("width", width * ratio);    // Scale width based on ratio
        width = width * ratio;    // Reset width to match scaled image
    }
}