function fillCategory(){ 
 // this function is used to fill the category list on load
addOption(document.drop_list.location, "2", "Valley Forge Beef & Ale (Audubon) 9:00pm", "");
}

function SelectSubCat(){
// ON selection of category this function will work

removeAllOptions(document.drop_list.SubCat);
addOption(document.drop_list.SubCat, "showdate", "Select Date", "");

if(document.drop_list.location.value == '2'){
addOption(document.drop_list.SubCat,"2010-09-11", "September 11");
addOption(document.drop_list.SubCat,"2010-09-25", "September 25");
addOption(document.drop_list.SubCat,"2010-10-09", "October 9");
addOption(document.drop_list.SubCat,"2010-10-16", "October 16");
addOption(document.drop_list.SubCat,"2010-10-23", "October 23");
addOption(document.drop_list.SubCat,"2010-10-30", "October 30");
addOption(document.drop_list.SubCat,"2010-11-20", "November 20");
}
if(document.drop_list.location.value == '3'){
}

}
////////////////// 

function removeAllOptions(selectbox)
{
	var i;
	for(i=selectbox.options.length-1;i>=0;i--)
	{
		//selectbox.options.remove(i);
		selectbox.remove(i);
	}
}


function addOption(selectbox, value, text )
{
	var optn = document.createElement("OPTION");
	optn.text = text;
	optn.value = value;

	selectbox.options.add(optn);
}