imgpath= getRealPath(fileId)；

document.getElementById("divSBTP").style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled='true',sizingMethod='scale',src=\""+ imgpath + "\")";//使用滤镜效果

function getRealPath(fileId){

var file_upl = document.getElementById(fileId);

file_upl.select();

return document.selection.createRange().text;
}