非常好的东西，有助于学习css虑镜，转msdn 2

答案：function changeTrans() {
    obj = getControlObject("oSelect");
    selectedValue = obj.options[obj.selectedIndex].value;
    if (selectedValue != "empty") {
        if (selectedValue.indexOf('Barn')!=-1) {
            oControlsSpan.innerHTML = oBarnControls.innerHTML;
            barnTransChange();
        }
        else if (selectedValue.indexOf('Blinds')!=-1) {
            oControlsSpan.innerHTML = oBlindsControls.innerHTML;
            blindsTransChange();
        }
        else if (selectedValue.indexOf('Checkerboard')!=-1) {
            oControlsSpan.innerHTML = oCheckerboardControls.innerHTML;
            checkerboardTransChange();
        }
        else if (selectedValue.indexOf('Fade')!=-1) {
            oControlsSpan.innerHTML = oFadeControls.innerHTML;
            fadeTransChange();
        }
        else if (selectedValue.indexOf('Iris')!=-1) {
            oControlsSpan.innerHTML = oIrisControls.innerHTML;
            irisTransChange();
        }
        else if (selectedValue.indexOf('Pixelate')!=-1) {
            oControlsSpan.innerHTML = oPixelateTransControls.innerHTML;
            pixelateTransChange();
        }
        else if (selectedValue.indexOf('RadialWipe')!=-1) {
            oControlsSpan.innerHTML = oRadialWipeControls.innerHTML;
            radialWipeTransChange();
        }
        else if (selectedValue.indexOf('RandomBars')!=-1) {
            oControlsSpan.innerHTML = oRandomBarsControls.innerHTML;
            randomBarsTransChange();
        }
        else if (selectedValue.indexOf('Slide')!=-1) {
            oControlsSpan.innerHTML = oSlideControls.innerHTML;
            slideTransChange();
        }
        else if (selectedValue.indexOf('Spiral')!=-1) {
            oControlsSpan.innerHTML = oSpiralControls.innerHTML;
            spiralTransChange();
        }
        else if (selectedValue.indexOf('Stretch')!=-1) {
            oControlsSpan.innerHTML = oStretchControls.innerHTML;
            stretchTransChange();
        }
        else if (selectedValue.indexOf('Strips')!=-1) {
            oControlsSpan.innerHTML = oStripsControls.innerHTML;
            stripsTransChange();
        }
        else if (selectedValue.indexOf('Wheel')!=-1) {
            oControlsSpan.innerHTML = oWheelControls.innerHTML;
            wheelTransChange();
        }
        else if (selectedValue.indexOf('.Wipe')!=-1) {
            oControlsSpan.innerHTML = oWipeControls.innerHTML;
            wipeTransChange();
        }
        else if (selectedValue.indexOf('Zigzag')!=-1) {
            oControlsSpan.innerHTML = oZigzagControls.innerHTML;
            zigzagTransChange();
        }
        else {
            oImg.style.filter=selectedValue;
            oControlsSpan.innerHTML = featuresHeader + 'This transition does not support any additional features.';
        }
    }
    else {
            oImg.style.filter='';
            oControlsSpan.innerHTML =  featuresHeader + 'No transition is currently selected.';
    }
    updateTransCode();
}

function updateTransCode() {
    obj = getControlObject("oSelect");
    selectedValue=obj.options[obj.selectedIndex].value;
    imgContents = imgObj.innerHTML;
    if (selectedValue != "empty") {
        oCodePre.innerText=completeTransCode(imgContents);
    }
    else {
        oCodePre.innerText=imgContents;
    }
    highlightText(imgContents);
}

function completeTransCode(imgText) {
    scriptBlock = '';
    scriptBlock = scriptBlock + 'var startImage ="' + startImage + '";\n';
    scriptBlock = scriptBlock + 'var endImage="' + endImage + '";\n';
    scriptBlock = scriptBlock + 'function doTrans() {\n';
    scriptBlock = scriptBlock + '        oImg.filters[0].apply();\n';
    scriptBlock = scriptBlock + '        if (oImg.src.

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