Slider size (case 17391)

[solhart]

Hi All,
I have three questions about modifying the slider (I am using the revised slider posted on this thread - and using media lab v 2008.1.21):

1) Is it possible to force the participants to move the slider before pressing continue?
2) Is it possible to allow participants to simply click on the line and have the slide indicator (not sure what to call this - the button that is moved) automatically appear where they click instead of forcing the subject to slide the indicator to the position? (I'm just thinking this could be easier for them and help avoid question fatigue).
3) Are there easy ways to change how the slider appears (e.g. use an image for the slider line (like a thermometer) instead of a line)?

Also, I figured out how to have media lab record the x vector of wear someone is on a picture when they click on it (I have attached it here in case it is useful to people) - but my ideal would be to have it possible for someone to click on a line (or thermometer as attached), have a mark appear where they clicked with a number appearing representing the numerical value of where they clicked (e.g. on a scale of 1-100) and then have a separate continue button for them to click on afterwards (the approach I use in the attached version automatically advances them, but I would like for the subject to see where they clicked and then press continue, with option to change where they clicked if they made a mistake). Is this possible? If it is, can you help me with creating a measurement tool that would do this?

Thanks in advance for your help!
-Sol