Visitor Visa to US (being on B1 in Canada)

Hi,

I am currently on a B1 visa to Canada. I wanted to visit my friends in US (say for 2-3 days over long weekends). Is it possible for me to apply for a Visitor Visa to the US being on B1 in Canada.

I don't have a lot of documents with me, as i just came in for business purpose, so not carrying all my Company Payslips / Offer Letter / Home Details etc. Can i still be eligible for the visa and process it. I do have a company card which pays for my expenses. Will that work as a proof of "Requisite Balance" to show to visit US. Please advice, as i did want to apply for the visa, but wasting on the application form just coz i dnt have the necessary documents will be a waste of time and money.

Thanks in advance.