bmap = shopping_bmap = <shopping.bmp>; //backgroundpicture

panel shopping_panel
{

pos_x = 100;
pos_y = 100;

bmap = shopping_bmap;

//buttons, windows ...

layer = 1;

}

function click_building
{

shopping_panel.visible = on;
...

}


//attach this function to your building:
action building
{

my.enable_click = on;
my.event = click_building;

}