Visibility of textbox and label.

Hi,

I have a drop down with a list of materials like 'Torque' , 'Barcode print' and 'others'. My requirement is, only on selection of torque my label and textbox has to be visible otherwise it has to be invisible. So i wrote a java script for this and gave selected row item from drop down as input to JS and triggered JS using selected row changed event of combo . But I am facing a difficulty where on choosing any item from combo the text box and label is getting visible and not becoming invisible.

How can I achieve this?

JS: 

if (name == 'Torque' && name != null && name != 'Visual WI' && name != 'Error Proofing' && name !=
'Data Collection' && name != 'Barcode Print' && name != 'Part Pick' && name != 'Others')

{
result = true;
}

else
{
result = false;
}

Thanks,

V Shalini.