function change_manufacturer(manufacturerMenu)
{ 
	modelMenu=document.popups.model;				// model menu
	
	if(manufacturerMenu.selectedIndex == 0)
	{
		nullOptions(modelMenu);
		modelMenu.options[0] = new Option("Model");
		modelMenu.options[0].selected=true;
		location.href = "manufacturer.php";
	}
	else
	{
		nullOptions(modelMenu);
		modelMenu.options[0] = new Option("Model");
		modelMenu.options[0].selected=true;
		location.href = "manufacturer.php?manufacturerID=" + manufacturerMenu.options[manufacturerMenu.selectedIndex].value
	}
}

function change_model(modelMenu)
{
	manufacturerMenu=document.popups.manufacturer;				// manufacturer menu
	if(modelMenu.selectedIndex != 0)
	{
		var theLocation = "model.php?manufacturerID=" + manufacturerMenu.options[manufacturerMenu.selectedIndex].value;
		theLocation = theLocation + "&modelID=" + modelMenu.options[modelMenu.selectedIndex].value;
		location.href = theLocation;
	}
}

function loadPage(fInfo){
  location.href = fInfo.options[fInfo.selectedIndex].value
  }

function nullOptions(aMenu)
{
	tot=aMenu.options.length;
	
	if (aMenu.options.length>0)
		for (i=0;i<tot;i++)
		{
		aMenu.options[i]=null;
		}
	aMenu.options.length=0;

}

function showPhoto(id, index) {
	newwindow=window.open('showphoto.php?id='+id+'&index='+index,'Images','height=650,width=700');
	if (window.focus) {newwindow.focus()}
	return false;
}