var cssProperty = function (attr) {
var prefix = [ 'O', 'ms', 'Moz', 'Webkit' ],
len = prefix.length,
style = document.createElement('i').style;
if (attr in style) {
return true;
}
attr = attr.replace(/^[a-z]/, function (val) {
return val.toUpperCase();
});
while (len--) {
if (prefix[ len ] + attr in style) {
return true;
}
}
return false;
};
