var imgHeight;
var imgWidth;
var maxWidthCommon;
var maxHeightCommon;

function img_change(img, maxWidth, maxHeight) {
    maxHeightCommon = maxHeight;
    maxWidthCommon = maxWidth;
    showImage(img.id, img.src);
}

function SumImagesWidth() {
    var slide_images = document.getElementsByTagName("img");

    for (i = 0; i < slide_images.length; i++)
        alert(slide_images[i].src + " " + slide_images[i].height);
}

function findHHandWW() {
    imgHeight = this.height; imgWidth = this.width;

    var xWidth = 0;
    var xHeight = 0;
    xWidth = imgHeight / maxHeightCommon;
    xHeight = imgWidth / maxWidthCommon;
    var elem = document.getElementById(this.id);
    if ((xWidth > 1) || (xHeight > 1))
        if (xWidth >= xHeight) {
        elem.width = this.width / xWidth;
    }
    else {
        elem.height = this.height / xHeight;
    }
    
    return true;
}

function showImage(id, imgPath)
{
    var myImg = new Image();
    myImg.id = id;
    myImg.name = imgPath;
    myImg.onload = findHHandWW;
    myImg.src = imgPath;
}