function change_unit_img(img){
	document.getElementById('sc2_unit_img').src = img=='' ? (IMAGE_URL + 'img_unit.gif') : (FILES_URL + 'star2/unit_icon/' + img);
}

function change_build_img(img){
	document.getElementById('sc2_build_img').src = img=='' ? (IMAGE_URL + 'img_building.gif') : (FILES_URL + 'star2/build_icon/' + img);
}

function show_unit_list_popup(){

	document.getElementById('unit_list_popup').style.display='';
}

function hide_unit_list_popup(){
	document.getElementById('unit_list_popup').style.display='none';
}