While the wordings are the same, they have different part number and different designs. That is why it is necessary to present 24 different sets of options that will be presented instantaneously as user changes the selection on Sign Type, Sign Heading and Sign Dimension.I can use Javascript to create the option list based on the selection made on the three drop-down lists when you load the page, but I don't know how to generate the option list dynamically and instantaneously as user changes the selection other than using hidden/show layers. Can you demonstrate how that can be done?Why not use a table to do this and show/hide the rows dependant on the options selected? Can you show me how that can be done?I tried using layers to do so, but the display was not working right. It seems that when you use <DIV id="set1,2,3 ...">, the layer will have no reference to the HTML document.Thank you very much for your help!