/*--------------------------------

·Ñ¸µ¹è³Ê

¸¸µçÀÌ : mins01(°ø´ë¿©ÀÚ)

hp : mins01.woobi.co.kr

MSN & NateOn : mins01(at)lycos.co.kr

------------=----------------------

»ç¿ë¹ý

<div>

  <div>1</div>

  <div>2</div>

  <div>3</div>

  <div>4</div>

<div>

ó·³ ±¸Á¶¸¦ °¡Á®¾ßÇÕ´Ï´Ù.

¾ÈÀÇ <div>´Â ²À style.height °ªÀ» °¡Á®¾ßÇÕ´Ï´Ù.

¾È¿¡¼­ <div>°¡ ¾Æ´Ñ °ÍÀº ÀüºÎ »èÁ¦µË´Ï´Ù.



var roll2 = new rolling_banner(document.getElementById('test2'));	

roll2.start();



ó·³ ½ºÅ©¸³Æ®¸¦ ½ÇÇàÇÏ¸é µË´Ï´Ù.

----------------------------------*/

var rolling_banner = function(ta){

	this.ta = ta;

//	this.ta.className = 'rolling_banner';	

	this.ta_id = 'roll_'+(this.ta.id||this.ta.name);

	this.gap = 5;					//¿òÁ÷ÀÌ´Â Çȼ¿´ÜÀ§

	this.gap_count=0;			//Ä«¿îÆÿë:°ÇµéÁö ¸¶¼¼¿ä

	this.gap_time = '1000';		//¿òÁ÷ÀÌ´Â ´ÜÀ§½Ã°£

	this.gap_sleep = '2000';	//È­¸éÀÌ ¸ØÃçÀÖÀ» ´ÜÀ§½Ã°£

	this.over_stop = true;  //¸¶¿ì½º¸¦ ¿Ã·ÈÀ» ¶§ ¸ØÃâ °ÍÀΰ¡?

	this.timer = null;

	eval(this.ta_id+'=this');

	var temp = eval(this.ta_id);

	this.init_div();	

}

rolling_banner.prototype.start = function(){	//·Ñ¸µ ½ÃÀÛ

	this.ta.readonly =false;

	this.stop =false;	

	if(!this.timer){ this.rolling();	 }

}

rolling_banner.prototype.stop = function(){	//·Ñ¸µ ½ÃÀÛ

	this.stop =true;

}

rolling_banner.prototype.init_div = function(){	//<div> »©°í ÀüºÎ Á¦°Å , ½ºÅ¸ÀÏ ÃʱâÈ­

	this.ta.style.position="relative";

	this.ta.style.overflow="hidden";

  	this.ta.onmouseover=function(){ eval("this.readOnly=true;"); }

  	this.ta.onmouseout=function(){ eval("this.readOnly=false;"); }



	var child = this.ta.childNodes;

	var ch = this.ta.firstChild;

	var ch2 = null;

	while(ch){

		ch2 = ch.nextSibling;

		if(ch.nodeName.toLowerCase() !='div'){

		this.ta.removeChild(ch);

		}else{

		ch.style.position = "relative";

		ch.style.borderStyle='none';

		ch.style.top='0px';

		}

		ch=ch2;

	}

}

rolling_banner.prototype.strtonum = function(str){

	var num = parseInt(str);

	if(isNaN(num)) num = '0';

	return num

}

rolling_banner.prototype.strtopx = function(str){

	var num = this.strtonum(str);

	return num+'px';

}

rolling_banner.prototype.rolling = function(){

	if(this.gap_count==0){

		this.sleep();

		this.gap_count+=1;

		return;

	}

	if(!this.ta.readOnly && !this.stop){

		this.rolling_top();

	}

	this.timer = null;

	var re = this.ta_id+'.rolling()';

	this.timer = setTimeout(re,this.gap_time);

}

rolling_banner.prototype.rolling_top = function(){

	this.gap_count+=parseInt(this.gap);

	var ch1 = this.ta.firstChild;

	var child = this.ta.childNodes;

	var ta_ch = null;

	var	top_ori = this.strtonum(child[0].style.top);

	var top = this.strtopx(top_ori-parseInt(this.gap));			

	for(var i=0,m=child.length;i<m;i++){

		child[i].style.top=top;

	}

	if(this.gap_count >= this.strtonum(ch1.style.height)){

		var temp =ch1.cloneNode(true);	

		this.ta.removeChild(ch1);

		this.ta.appendChild(temp);

		for(var i=0,m=child.length;i<m;i++){

			child[i].style.top='0px';

		}		

	this.gap_count = 0		

	}

}

rolling_banner.prototype.sleep = function(){

	this.timer = null;

	var re = this.ta_id+'.rolling()';

	this.timer = setTimeout(re,this.gap_sleep);

}