(function() {

    var __rand = Math.round(Math.random() * 100000);
    document.write('<div id="widget_' + __rand + '"></div>');

    (function(elem) {
        var params = {},
            html = '<iframe',
            size = '980x120',
            formats = '970x115 645x115 980x120 844x178 728x90 440x200'.split(' '),
            valid = false;
        
        for (var i=0; formats[i]; i++) {
            if (size.toLowerCase() == formats[i]) {
                valid = true;
            }
        }
        if (!valid) {
            return;
        }
    
        var sizes = size.split('x');

        params = {
            frameBorder: 0,
            marginWidth: 0,
            marginHeight: 0,
            scrolling: "no",
            width: sizes[0] + 'px',
            height: sizes[1] + 'px',
            src:'http://www.sjoraddning.se/widgets/banner/?size='+size
        }
        
        for (var key in params ) {
            var val = '"'+params[key]+'"';
            html += ' '+key+'='+val;
        }
    
        html += '></iframe>';
        window.setTimeout(function() {
            elem.innerHTML = html;
        }, 100);

    })(document.getElementById('widget_'+__rand));

})();