rollingbg = function(parent, imgArr){
	this.parentDiv = document.getElementById(parent);
	this.imgArr = imgArr;

	rollingbg.prototype.changbg = function(){
		this.viewBg = 0;
		this.viewBg = Math.floor(Math.random() * this.imgArr.length);
		this.bgImg = this.parentDiv.getElementsByTagName("img");
		this.bgImg[0].src = this.imgArr[this.viewBg];
		this.parentDiv.style.display = "block";
	}
}

rollingbg2 = function(parent, imgArr , altArr){
	this.parentDiv = document.getElementById(parent);
	this.imgArr = imgArr;
	this.altArr = altArr;

	rollingbg2.prototype.changbg = function(){
		this.viewBg = 0;
		this.viewBg = Math.floor(Math.random() * this.imgArr.length);
		this.bgImg = this.parentDiv.getElementsByTagName("img");
		this.bgImg[0].src = this.imgArr[this.viewBg];
		
		this.parentDiv.style.display = "block";
		this.bgImg[0].alt = this.bgImg[0].alt +" "+ this.altArr[this.viewBg];
	}
}


/* 팝업존 */
//이미지 팝업존
var popup_timer = null;
var popup_delay_time = 4000;
var popup_pause = false;
var popup_button_pause = false;
var select_popup_num = 1;
  
function popup_display(popupIDX, move, strid) {
	if(!popupIDX)  {
  		popupIDX = select_popup_num;
  		if(popup_pause==true && !move) return;
  		if(popup_button_pause==true && !move) return;
  		if(!move) move = 'next';
  		hide_popup(strid, popupIDX);
  	}else{
  		hide_popup(select_popup_num);
  	}
  	if(move=='prev') {
  		if(popupIDX==1) {
  			popupIDX = popup_object_num;
  		} else {
  			popupIDX--;
  		}
  	} else if(move=='next') {
  		if(popupIDX==popup_object_num) {
  			popupIDX = 1;
  		} else {
  			popupIDX++;
  		}
  	} else if(move=='pause') {
  		if(popup_button_pause==true) {
  			popup_button_pause=false;	
  			document.getElementById("popup_pause_img").src='images/main/popup_btn_stop.gif';
  			document.getElementById("popup_pause_img").alt='일시정지 팝업';
  		} else if(popup_button_pause==false) {
  			popup_button_pause=true;	
  			document.getElementById("popup_pause_img").src='images/main/popup_btn_play.gif';
  			document.getElementById("popup_pause_img").alt='재생 팝업';
  		}
  	}
  	show_popup(strid, popupIDX);
  	select_popup_num = popupIDX;
}
  
function hide_popup(strid, num) {
  	document.getElementById(strid + num).style.display = 'none';
}
  
function show_popup(strid, num) {
  	document.getElementById(strid + num).style.display = 'block';
}

function popup_scroll(strid) {
  	popup_timer = setInterval("popup_display('','','"+strid+"')",popup_delay_time); 
}


//배너
var popup_timer2 = null;
var popup_delay_time2 = 4000;
var popup_pause2 = false;
var popup_button_pause2 = false;
var select_popup_num2 = 1;
  
function popup_display2(popupIDX, move, strid) {
	if(!popupIDX)  {
  		popupIDX = select_popup_num2;
  		if(popup_pause2==true && !move) return;
  		if(popup_button_pause2==true && !move) return;
  		if(!move) move = 'next';
  		hide_popup2(strid, popupIDX);
  	}else{
  		hide_popup2(select_popup_num2);
  	}
  	if(move=='prev') {
  		if(popupIDX==1) {
  			popupIDX = popup_object_num2;
  		} else {
  			popupIDX-=2;
  		}
  	} else if(move=='next') {
  		if(popupIDX==popup_object_num2) {
  			popupIDX = 1;
  		} else {
  			popupIDX+=2;
  		}
  	} else if(move=='pause') {
  		if(popup_button_pause2==true) {
  			popup_button_pause2=false;	
  			document.getElementById("popup_pause_img2").src='images/main/popup_btn_stop.gif';
  			document.getElementById("popup_pause_img2").alt='일시정지 팝업';
  		} else if(popup_button_pause2==false) {
  			popup_button_pause2=true;	
  			document.getElementById("popup_pause_img2").src='images/main/popup_btn_play.gif';
  			document.getElementById("popup_pause_img2").alt='재생 팝업';
  		}
  	}
	
	if(popupIDX > popup_object_num2){  //next 처리
		select_popup_num2 = 1;
	}
	else if(popupIDX == popup_object_num2 && move=='prev'){  //prev 처리
		if((popupIDX % 2) == 0){
			select_popup_num2 = popupIDX - 1;
		}
		else{
			select_popup_num2 = popupIDX;
		}
	}
	else{
		select_popup_num2 = popupIDX;
	}

	show_popup2(strid, select_popup_num2);
}
  
function hide_popup2(strid, num) {
  	//첫번째 텍스트 숨김
	document.getElementById(strid + num).style.display = 'none';

	//두번째 텍스트 숨김
	if(num != popup_object_num2){
		document.getElementById(strid + (num+1)).style.display = 'none';
	}
	else{
		document.getElementById(strid + (num-(num-1))).style.display = 'none';
	}
}
  
function show_popup2(strid, num) {
	//첫번째 텍스트 출력
  	document.getElementById(strid + num).style.display = 'block';
	

	//두번째 텍스트 출력
	if(num != popup_object_num2){
		document.getElementById(strid + (num+1)).style.display = 'block';
	}
	/*else{
		document.getElementById(strid + (num-(num-1))).style.display = 'block';
	}*/
}

function popup_scroll2(strid) {
  	popup_timer2 = setInterval("popup_display2('','','"+strid+"')",popup_delay_time2); 
}



//포토뉴스
var popup_timer3 = null;
var popup_delay_time3 = 4000;
var popup_pause3 = false;
var popup_button_pause3 = false;
var select_popup_num3 = 1;
  
function popup_display3(popupIDX, move, strid) {
	if(!popupIDX)  {
  		popupIDX = select_popup_num3;
  		if(popup_pause3==true && !move) return;
  		if(popup_button_pause3==true && !move) return;
  		if(!move) move = 'next';
  		hide_popup3(strid, popupIDX);
  	}else{
  		hide_popup3(select_popup_num);
  	}
  	if(move=='prev') {
  		if(popupIDX==1) {
  			popupIDX = popup_object_num3;
  		} else {
  			popupIDX--;
  		}
  	} else if(move=='next') {
  		if(popupIDX==popup_object_num3) {
  			popupIDX = 1;
  		} else {
  			popupIDX++;
  		}
  	} else if(move=='pause') {
  		if(popup_button_pause3==true) {
  			popup_button_pause3=false;	
  			document.getElementById("popup_pause_img3").src='images/main/photo_news_btn_stop.gif';
  			document.getElementById("popup_pause_img3").alt='일시정지 팝업';
  		} else if(popup_button_pause3==false) {
  			popup_button_pause3=true;	
  			document.getElementById("popup_pause_img3").src='images/main/photo_news_btn_play.gif';
  			document.getElementById("popup_pause_img3").alt='재생 팝업';
  		}
  	}
  	show_popup3(strid, popupIDX);
  	select_popup_num3 = popupIDX;
}
  
function hide_popup3(strid, num) {
  	document.getElementById(strid + num).style.display = 'none';
}
  
function show_popup3(strid, num) {
  	document.getElementById(strid + num).style.display = 'block';
}

function popup_scroll3(strid) {
  	popup_timer3 = setInterval("popup_display3('','','"+strid+"')",popup_delay_time3); 
}


//텍스트 팝업존(세로롤링)
function banner_roll2(div_id, banner_height, banner_delay, banner_speed, this_height)
{
 
	var div_tag = document.getElementById(div_id);
	var a_tag, i;
      
	this_height ++;
  
	if(this_height < banner_height) {
		div_tag.style.top =- this_height;
		setTimeout("banner_roll2('" + div_id + "', " + banner_height + ", " + banner_delay + ", " + banner_speed + ", " + this_height + ");", banner_speed);
	}
	else{
		a_tag = div_tag.getElementsByTagName("table");
		div_tag.appendChild(a_tag[0]);
		div_tag.style.top = 0;
		setTimeout("banner_roll2('" + div_id + "', " + banner_height + ", " + banner_delay + ", " + banner_speed + ", 0);", banner_delay);
	}
	return true;
}