Assert phone number type (for china)

pnt.js

/**
 * Return phone number type
 * <p>For china:</p>
 * <ul>
 * <li>0  unknow</li>
 * <li>1  china mobile (cellphone)</li>
 * <li>2  china unicom (cellphone)</li>
 * <li>3  china net (cellphone)</li>
 * <li>4  china net (telphone)</li>
 * </ul>
 * @return {Number} number type
 */
String.prototype.pnt=function(){

	var __cm = /^(((13[5-9])|(147)|(15[012789])|(18[23478]))\d{8})|(134[0-8])\d{7}$/; 
	var __cu = /^((13[0-2])|(145)|(15[5-6])|(18[5-6]))\d{8}$/; 
	var __ct = /^(((133)|(153)|(18[019]))\d{8})|(1349)\d{7}$/; 
	var __tel= /^((0[12]\d{1}\d{8})|(0[3-9]\d{2}\d{7,8}))$/; 

	var __retval=
		__cm.test(this) ? 1:
		__cu.test(this) ? 2:
		__ct.test(this) ? 3:
		__tel.test(this) ? 4:
		0;

	return __retval;

}