jQuery(function($) {

	$('#slideshow').cycle({ 
	    fx:    'fade', 
	    speed:  2500,
	    timeoutFn: calculateTimeout 
	 });	
	
});

function calculateTimeout(currElement, nextElement, opts, isForward) { 
    // here we set even number slides to have a 7500ms timeout; 
    // by returning false for odd number slides we let those slides 
    // inherit the default timeout value (2500ms) 
    var index = opts.currSlide; 
    return index % 2 ? 7500 : false; 
}