After trial and error research I discovered to change the above code to ?>&w=”&h=”&zc=0&q=100″
The w & h parameters are left blank to prevent pixel size restraints
zc = zoom or crop so set this to “0” which means to “zoom” the full image for resizing without cropping.
Then I further added a CSS image class which provided the size parameters in percentages as below:
$values = get_post_custom_values(“fpthumb”); echo $values[0]; ?>&w=”&h=”&zc=0&q=100″
alt=”<?php the_title(); ?>” class=”thumbnail”
CSS
thumbnail {
float: left;
height: auto;
width: 25%;
margin-top: auto;
margin-right: 2%;
margin-bottom: auto;
margin-left: auto;
}