Kunal the simple answer is no, not without you actually making the page yourself.
You need to read about XML and XLST to understand how the pages are rendered at run time to make a 'real' drop down.
However given the range of components available in courselab you could make a page which looks like it has a drop down but really has a pop up. They are really very similar in efective action on a page.
Trap what the user clicks and update the course variables and you'll have something that does what you are after.
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Now you're going to ask exactly how do I do this and I'm going to say sit down and draw out what you want to happen (plan it on paper, broken down into steps) then look at the available objects and actions to see which fits each step.
Read the documentation regarding use of variables (then practice and apply it to working examples) and then apply that to the objects you've used.
Kunal the simple answer is no, not without you actually making the page yourself.
You need to read about XML and XLST to understand how the pages are rendered at run time to make a 'real' drop down.
However given the range of components available in courselab you could make a page which looks like it has a drop down but really has a pop up. They are really very similar in efective action on a page.
Trap what the user clicks and update the course variables and you'll have something that does what you are after.
---
Now you're going to ask exactly how do I do this and I'm going to say sit down and draw out what you want to happen (plan it on paper, broken down into steps) then look at the available objects and actions to see which fits each step.
Read the documentation regarding use of variables (then practice and apply it to working examples) and then apply that to the objects you've used.