Proxy url cannot have parameters

[mzand33]

I am using a proxy url that contains a parameter:
http://abc.com/myproxy.jsp?myparam=foo

When I pass this proxy as an option to html2canvas, my proxy gets the following parameter:
myparam=foo?url=abc.com....
The reason is that the code automatically puts a question mark (?) after the proxy url. The code should check whether there is already a parameter at the end of the url. This was done in the the 0.5 version:
proxyUrl + (proxyUrl.indexOf("?") > -1 ? "&" : "?") + "url=" + encodeURIComponent(src)

Please fix.