If I only have height.

[Ismail Khan]

Hello all. I am facing a problem using Smart Image Resizer. It will be great if some can help me. 

I have a dimension of 340x480, it crop the image, doing fine. But what I need that when height is greater than width, i.e. 340x480,

I want this image to be of 768 width and 480 height (which is in adobe photo shop). I mean I don't want it to crop width just resize image width 768, and every time height is greater than width it should get the correct width. 

I hope you understand my question. 

I will be waiting for any response.