var div = document.querySelector('.embed-container');

    var parent = div.parentElement;
    parentWidth = parent.clientWidth;
    var parentPaddingLeft = window.getComputedStyle(parent, null).getPropertyValue('padding-left');
    var parentPaddingRight = window.getComputedStyle(parent, null).getPropertyValue('padding-right');

    var paddingSum = parseInt(parentPaddingRight) + parseInt(parentPaddingLeft) ;

    parentWidth = parentWidth - paddingSum;

    var dim = div.dataset.dim;

    var height = (parentWidth / dim);

    var newiframe = document.createElement('iframe');
    newiframe.setAttribute('width', parentWidth);
    newiframe.setAttribute('height', height);
    newiframe.setAttribute('allowfullscreen','');
    //newiframe.setAttribute('webkitallowfullscreen','true');
    //newiframe.setAttribute('mozallowfullscreen','true');
    newiframe.setAttribute('src','https://ppt.ir?iframe=' + div.getAttribute('id') + '&u=' + window.location.href);
    newiframe.setAttribute('frameborder','0');

    div.appendChild(newiframe);