function encodeToHex(str){
    var r = "";
    var e = str.length;
    var c = 0;
    var h;
    while(c < e){
        h = str.charCodeAt(c++).toString(16);
        while(h.length < 2) 
			h = "0" + h;
        r= r + h;
    }
    return r;
}