var Url=location.hostname;
switch(Url){
	case "www.js21cn.com":
		document.write("<script type='text/javascript' src='/Building/building_daohang.js'></script>");	
		break;

	case "www.yx24.com":
		document.write("<script type='text/javascript' src='/Medicine/edu_daohang.js'></script>");	
		break;

	case "www.cj21cn.com":
		document.write("<script type='text/javascript' src='/finance/finance_daohang.js'></script>");	
		break;

	case "www.wy21cn.com":
		document.write("<script type='text/javascript' src='/english/english_daohang.js'></script>");	
		break;

	default:
		document.write("<script type='text/javascript' src='/show_daohang.js'></script>");	
		break;
}