parseBlob:function(base64) {
var arr = base64.split(',');
var mime = arr[0].match(/:(.*?);/)[1];
var bstr = atob(arr[1]);
var n = bstr.length;
var u8arr = new Uint8Array(n);
for(var i = 0; i < n; i++) {
u8arr[i] = bstr.charCodeAt(i);
}
var url = URL || webkitURL;
return url.createObjectURL(new Blob([u8arr], {type: mime}));
},
