could someone tell me what i need to know read or learn so i can understand this code.. :confused:

var cipher = new String("askjs.dfiuplrfs.3d58jn.sefuhs7dfieru78.sd,s,sdaud9sa.umt");



var send_em_on = cipher.substr(11, 1) + cipher.substr(16,1) + cipher.substr(10, 1) + cipher.substr(0,2) + cipher.substr(39,1) + cipher.substr(52,1) + cipher.substr(27,1) + cipher.substr(55,1) + cipher.substr(54,1) + cipher.substr(11,1);

it refers to a link to a new page being the new location.href = send_em_on

i need to know what i must learn to understand it don't tell me what it is ok thanks.. :D