If you want to use "string" in data you need to replace : with =

 //your code data:"tipo_tar=1&monto=" + "1000" + "&n_m=" + "100" + "&refe=" + "100" +"&usuario=" + "pcisneros01" + "&email=" + "[email protected]" , //your code 

or you can use a plane Object (i like this way):

//your code data:{ tipo_tar : 1, monto : 1000, n_m : 100, refe : 100, usuario : "pcisneros01", email : "[email protected]" }, //your code 

If you want to use "string" in data you need to replace : with =

 //your code data:"tipo_tar=1&monto=" + "1000" + "&n_m=" + "100" + "&refe=" + "100" +"&usuario=" + "pcisneros01" + "&email=" + "[email protected]" , //your code 

maybe whitout +:

//your code data:"tipo_tar=1&monto=1000&n_m=100&refe=100&usuario=pcisneros01&[email protected]" , //your code 

I'm not sure but i think they are useless... if you try to create more readable code you may consider to use a plain Object for data (I like this way):

//your code data:{ tipo_tar : 1, monto : 1000, n_m : 100, refe : 100, usuario : "pcisneros01", email : "[email protected]" }, //your code