Design header website

Hi I have a template of ecommerce website and the logo of company, i want a professional to make a header that stand out and a smaller banner. I have the header in *.psd format and logo in *.cdr. I need a javascript detector to check the browser window size, and add an image in that area when the window size gets above a certain point or a javascript detector to check the browser window size and change sites completely when the window gets past a certain size (easily done with CSS-based layout) In the end that person have put the code and the images working correctly. I have to see the portfolio or email me.