//课程
if(ask_union_type == '0'){
	url = "http://union.ask123.net/interface/interface_course?union_id="+ask_union_id+"&ask_color="+ask_color;
}//搜索
else if(ask_union_type == '1'){
	url = "http://union.ask123.net/interface/interface_search?union_id="+ask_union_id+"&ask_color="+ask_color;   
}//关键字
else if(ask_union_type == '2'){
	url = "http://union.ask123.net/interface/interface_keyword?union_id="+ask_union_id+"&ask_color="+ask_color+"&ask_direction="+ask_direction; 
}//一般广告
else if(ask_union_type == '3'){
	url = "http://union.ask123.net/interface/interface_ad?union_id="+ask_union_id; 
}
document.write('<iframe align="center,center" marginWidth=0 marginHeight=0 scrolling=no frameBorder=0 width='+ask_width+' height='+ask_height+' allowTransparency src="'+url+'"></iframe>')