function SelectModel()
{
	removeAllOptions(document.drop_list.Model);

	addOption(document.drop_list.Model, "", "Select Model", "");

	var i;
	for (i = 0; i < document.drop_list.FamilyModel.options.length; i++)
	{
		if(document.drop_list.Family.value == document.drop_list.FamilyModel.options[i].value)
		{
			addOption(document.drop_list.Model, document.drop_list.FamilyModel.options[i].text, document.drop_list.FamilyModel.options[i].text, "");
		}
	}
}

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);
}