slideposition = 0;
slidemax = 16*-620;
function slideit(action,parameter) {
	if ($('portfolioslide')) {
		duration = 0.7;
		if (action==1) {
			slideposition = slideposition + (parameter * 620);
			if (slideposition > 0) {
				slideposition = slidemax;
				duration = 2.0;
			}
			if (slideposition < slidemax) {
				slideposition = 0;
				duration = 2.0;
			}
			new Effect.Move('portfolioslide', {
		  	x: slideposition, y: 0, mode: 'absolute',
		  	transition: Effect.Transitions.sinoidal, //spring,
		  	duration: duration
			});
		} else {
			slideposition = parameter * -620;
			new Effect.Move('portfolioslide', {
		  	x: slideposition, y: 0, mode: 'absolute',
		  	transition: Effect.Transitions.full,
		  	duration: 0.1
			});
		}
	}
	return false;
}