var ScrollControl = function(objId,options){
this.init(objId,options);
}
ScrollControl.prototype = {
stage : {},
options : {},
isover : false,
freeze : false,
controlPlay : true,
course : 'top',
itimes : 0,
top : 0,

init : function(objId,options){
this.setOptions(options);
this.setStage(objId);
this.setTrueData();

this.move();
},
setOptions : function(options){
options.inteval = options.inteval || 50;
options.freeze = options.freeze || 1000;
options.height = parseInt(options.height, 10) || 20;
options.style = options.style || 'scroll';
options.line = options.line || 1;
options.stopline = options.stopline || options.line;
options.reverse = options.reverse || '';
options.debug = options.debug || false;

options.blockHeight = options.height * options.line;
options.stopHeight = options.height * (options.stopline || options.line);


// options.cMarginTop = options.cMarginTop || (options.height/2) * 0.3;
options.cMarginTop = 0;
options.cHeight = options.height - options.cMarginTop;
options.freeze = (options.style == 'no-freeze') ? options.inteval : options.freeze;

switch(options.style){
case 'jump' : options.style = options.style; break;
default : options.style = 'scroll'; break;
}


this.course = options.start || 'top';
this.options = options;
},
setTrueData : function(){
var cObjs = this.stage.childNodes;
var cObjLen = cObjs.length;
var removes = [];

for(var i=0;i<cObjs.length;i++){
if(!cObjs[i].tagName){
removes.push(cObjs[i]); //¹Ù·Î »èÁ¦ ½Ã µ¥ÀÌÅÍ ²¿À̴µí ÇÏ¿© ÀÏ´Ü ÅµÇÔ.
}else{
cObjs[i].style.margin = "0";

cObjs[i].style.marginTop = this.options.cMarginTop;
cObjs[i].style.height = this.options.cHeight+'px';
}
}

// ãÀº µ¥ÀÌÅ͸¦ »èÁ¦ÇÔ.(FFÀÇ °æ¿ì text ³ëµå°¡ ÷ºÎµÊ.)
for(var i=0;i<removes.length;i++){
this.stage.removeChild(removes[i]);
}

if(!this.options.debug && cObjLen <= this.options.line ){
var attachLen = parseInt(this.options.line/cObjLen, 10);

for(var i=0; i<attachLen; i++){
for(var j=0; j<cObjLen; j++){
this.stage.appendChild( cObjs[j].cloneNode(true) );
}
}
}

},
setStage : function(objId){
var This = this;
this.stage = document.getElementById(objId);

this.stage.style.height = this.options.blockHeight+'px';
this.stage.style.padding = "0px";
this.stage.style.margin = "0px";

if(!this.options.debug)
this.stage.style.overflow = "hidden";


this.stage.onmouseover = function(){This.isover=true;}
this.stage.onmouseout = function(){This.isover=false;}

this.stage.scrollTop = 0; //ÆÄÆø¿¡¼­ ¸®ÇÁ·¡½Ã ¹®Á¦
},
setCourse : function(course){
if(this.course != 'down' && course == 'down' && this.stage.scrollTop <= 0){
this.changeChild();
this.stage.scrollTop = this.options.height;
}else if(course == 'top' && this.stage.scrollTop >= this.options.height){
if(this.options.reverse != 'all'){
this.changeChild(this.options.line);
this.stage.scrollTop = this.stage.scrollTop - this.options.stopHeight;
}
}

this.course = course;
if(this.itimes > 0){
window.clearTimeout(this.itimes);
this.move();
}
},
changeChild : function(count){
if(count == undefined){ count = this.stage.childNodes.length - 1;}

for(var i=0; i<count;i++ ){
this.stage.appendChild( this.stage.childNodes[0] ); // Ç×»ó ù¹ø°°ÍÀ» µÚ·Î À̵¿
}
},
actionTop : function(){
if(this.options.style == 'jump'){
this.changeChild(this.options.stopline);
this.stage.scrollTop = 0;
this.freeze = true;
}else{
this.top++;
this.stage.scrollTop++;

if( this.stage.scrollTop >= this.options.height ){
this.changeChild(1);
this.stage.scrollTop = this.stage.scrollTop - this.options.height;

//if¹® ¾È¿¡ ÀÖ´Â°Ô È¿À²
if( this.top >= this.options.stopHeight ){
this.top = 0;
this.freeze = true;
if(this.options.reverse == 'top' || this.options.reverse == 'all') this.setCourse("down");
}
}
}
},
actionDown : function(){
if(this.options.style == 'jump'){
this.freeze = true;
for(var i=0; i<this.options.stopline;i++){
this.changeChild();
}
}else{
this.top--;
this.stage.scrollTop--;

if( this.stage.scrollTop <= 0 ){
this.changeChild();
this.stage.scrollTop = this.stage.scrollTop + this.options.height;

//Math.abs ·Î ±¸ÇÒ ¼ö ÀÖÁö¸¸, MathÇÔ¼ö°¡ ¹«°Å¿î °ü°è·Î À½¼ö ó¸®ÇÔ.(if¹® ¾È¿¡ ÀÖ´Â°Ô È¿À²)
if( -(this.top) >= this.options.stopHeight ){
for(var i=1; i<this.options.stopline;i++){
this.changeChild();
}

this.top = this.top + this.options.stopHeight;
this.freeze = true;
}
}
}

if(this.freeze){
this.stage.scrollTop = this.options.stopHeight;
if(this.options.reverse == 'down' || this.options.reverse == 'all') this.setCourse("top");
}

},
move : function(){
this.itimes = 0;
if(!this.isover && this.controlPlay){
if(this.course == 'top') this.actionTop();
else this.actionDown();
}

var This = this;
if(this.freeze){ this.itimes = window.setTimeout(function(){This.move()}, this.options.freeze); }
else{ window.setTimeout(function(){This.move()}, this.options.inteval); }
this.freeze = false;
},
stop : function(){
this.controlPlay = false;
},
restart : function(){
this.controlPlay = true;
}


};

/* »ç¿ë¹ý Start*/
// var scroll = new ScrollControl('html element id',options);
//
// options Ç׸ñ
// inteval : Àç±ÍÈ£Ã⠽𣠰£°Ý 1/1000ÃÊ(±âº»°ª 50)
// freeze : Àá½Ã ¸ØÃç ÀÖ´Â ½Ã°£ °£°Ý 1/1000 ÃÊ(±âº»°ª 1000)
// height : °´Ã¼ ³ôÀÌ(±âº»°ª 20)
// cMarginTop : ÀÚµ¿À¸·Î ±¸ÇØÁÖ³ª, ±ÛÀÚ Å©±â¿Í °´Ã¼ ³ôÀÌ µîÀ¸·Î ÀÎÇØ, ÀǵµÇÑ ³ôÀÌ°¡ ³ª¿ÀÁö ¾ÊÀ» ¼ö Àֱ⠶§¹®¿¡ »ç¿ëÀÚ°¡ °­Á¦ ÀÔ·ÂÇÔ.
// line : ½ºÅ©·Ñ line¸¦ ±¸ÇÔ.(ÇØ´ç °´Ã¼ÀÇ ³ôÀÌ´Â line * height)°¡ µÊ.
// stopline : ±âº»°ª(line¿Í °°À½), stopline Á¤º¸¿¡ µû¶ó line¿Í´Â µ¶¸³ÀûÀ¸·Î ½ºÅ©·ÑÀ» freeze ½ÃÅ´.
// start : ±âº»°ª 'top', top,down µÎ °ªÀÌ ÀÖÀ½.
// reverse : [ | all | top | down ]
// none - none°¡ ¾Æ´Ñ, °ªÀÌ ¾ø´Ù´Â ¶æÀÓ. ½ÇÁ¦°ª string ''°ª
// all - À§, ¾Æ·¡¿¡ ¸ðµÎ reverse¸¦ ½ÃÅ´. ÀÌ ¼³Á¤À» ÇÏ´Â °æ¿ì À§¾Æ·¡·Î ¿Ô´Ù°¬´Ù ÇÔ.
// top - course°¡ topÀÎ °æ¿ì, setCourse('down')À» È£ÃâÇÔ
// down - course°¡ downÀÎ °æ¿ì, setCourse('top')À» È£ÃâÇÔ
// style : [ scroll | jump | s-jump | jump-s ]
// scroll - ±âº» ½ºÅ©·Ñ ¹× setCourse È£Ã⠽ÿ¡µµ ½ºÅ©·Ñ À̵¿. [±âº»Çü]
// jump - ±âº»À¸·Î ´ÙÀ½ Ç׸ñÀ¸·Î Á¡ÇÁ ¹× setCourse È£Ã⠽ÿ¡µµ Á¡ÇÁ À̵¿.
//
/* »ç¿ë¹ý End */