/***********************************************
* CMotion Image Gallery- й Dynamic Drive DHTML code library (www.dynamicdrive.com)
* Visit http://www.dynamicDrive.com for source code
* This copyright notice must stay intact for legal use
* Modified for autowidth and optional starting positions in
* http://www.dynamicdrive.com/forums/showthread.php?t=11839 by jschuer1 8/5/06
***********************************************/
function getMotionWidth()
{
	return 140+28;
}
var picMotionWidth = getMotionWidth();
function carousel(){

        iedom=document.all||document.getElementById;
	movestate=null;lefttime=null;righttime=null;
	speed = false;

/*function, which run the class*/
     this.construct = function(){                     
		this.maxspeed = 10;
        var maxspeed=this.maxspeed;
        var startpos=this.startpos;
	var pref=this.pref;
        var crossmain=_(pref+"motioncontainer");
        var cross_scroll=_(pref+"motiongallery");

     if ( iedom ){
        var menuwidth=crossmain.offsetWidth;										 // menuwidth - Длина верхнего дива

        div_l=_(pref+"div_l");
        div_r=_(pref+"div_r"); 
            
        var actualwidth=_(pref+"trueContainer").offsetWidth;             // actualwidth- Длина дива с картинками

        var first = _(pref+'motiongallery');              		   // Блочок для создания копии полоски картинок
        var last  = first.cloneNode(true);
            last.id = pref+'motiongallery_move';
        var insertPoint = _(pref+'motioncontainer');
            insertPoint.appendChild(last);
            last.style.left = actualwidth+"px";

        var cross_scroll_move=_(pref+"motiongallery_move"); // Получения созданного дивчика
                        
        if (startpos)
            cross_scroll.style.left=(menuwidth-actualwidth)/startpos+'px';	// Вычисление начального смещения путем деления длин двух дивов


            div_l.onclick = function(){ 
		if (speed == false) {
		        offset = 0;
			cross = cross_scroll; 
			cross_move = cross_scroll_move; 
			width = actualwidth;
			menu_w = menuwidth;  
			speed = true;
			motionengine( "left", maxspeed); 
		}
		};

            div_r.onclick = function(){ 
		if (speed == false) {
	        	offset = 0;
			cross = cross_scroll; 
			cross_move = cross_scroll_move; 
			width = actualwidth; 
			menu_w = menuwidth; 
			speed = true;
			motionengine( "right", maxspeed); 
		}
		};

//	      div_l.onmouseout= function(){ stopmotion(); };
//            div_r.onmouseout= function(){ stopmotion(); };
    }
         loadedyes=1;
     }
	
/*function which run moveleft and moveright functions*/
    motionengine = function ( direct, maxspeed ){								// Джвижущая функция
                                           
         if (direct =="right"){
          scrollspeed=maxspeed;
          clearTimeout(righttime);
         if (movestate!="left") moveleft();	  /*moveleft() - вправо*/		// Все добро двигаем влево, кажется что движение идет вправо
         }
         else if (direct=="left"){
          scrollspeed=maxspeed;
          clearTimeout(lefttime);
         if (movestate!="right") moveright();   /*moveright() - влево*/
         }
         else
          scrollspeed=0;
      }

/*moveleft function*/

     moveleft = function(){
		 if(offset + scrollspeed > picMotionWidth){
			scrollspeed = scrollspeed - (offset + scrollspeed - (picMotionWidth));
		 }
		 var saveOff = offset,left = cross.style.left,move = cross_move.style.left;

            if (!isNaN(loadedyes)){
             movestate="left";

            if (iedom&&parseInt(cross.style.left)>(menu_w-width-menu_w-scrollspeed)){
			if ( offset > menu_w-scrollspeed ) {
				var dim = (menu_w+5) - offset; 
	 			cross.style.left=parseInt(cross.style.left)-dim+"px";
			}
			else{ cross.style.left=parseInt(cross.style.left)-scrollspeed+"px";}
	    }
            else{ cross.style.left = parseInt(cross_move.style.left)+width-scrollspeed+"px";}

            if (iedom&&parseInt(cross_move.style.left)>(menu_w-width-menu_w-scrollspeed)){

			if ( offset > menu_w-scrollspeed ) {
				var dim = (menu_w+5) - offset;
	 			cross_move.style.left=parseInt(cross_move.style.left)-dim+"px";

			}
			else{ cross_move.style.left=parseInt(cross_move.style.left)-scrollspeed+"px";}
	    }
            else{ cross_move.style.left = parseInt(cross.style.left)+width+"px";}


  	    offset = offset + scrollspeed;
         }


      if (offset >= picMotionWidth) {
		  stopmotion();
		  speed = false;

	  }
	  else{ lefttime=setTimeout("moveleft()",40);}

      }














/*moveright function*/
    moveright = function(){
		 if(offset + scrollspeed > picMotionWidth){
			scrollspeed = scrollspeed - (offset + scrollspeed - (picMotionWidth));
		 }
         if (loadedyes){
          movestate="right";

         if (iedom&&parseInt(cross.style.left)<width+scrollspeed){ 

			if ( offset > menu_w-scrollspeed ) {
				var dim = (menu_w+5) - offset;
	 			cross.style.left=parseInt(cross.style.left)+dim+"px";
			}
			else cross.style.left=parseInt(cross.style.left)+scrollspeed+"px";
		} else cross.style.left = parseInt(cross_move.style.left)-width+scrollspeed+"px"; 

         if (iedom&&parseInt(cross_move.style.left)<width+scrollspeed){

			if ( offset > menu_w-scrollspeed ) {
				var dim = (menu_w+5) - offset;
	 			cross_move.style.left=parseInt(cross_move.style.left)+dim+"px";
			}
			else cross_move.style.left=parseInt(cross_move.style.left)+scrollspeed+"px";
	 }
      	 else cross_move.style.left = parseInt(cross.style.left)-width+"px"; 

	 offset = offset + scrollspeed;

         }
      

      if (offset >= picMotionWidth) {stopmotion();speed = false;}
	  else righttime=setTimeout("moveright()",40);

      }

/*End of speed of carousel*/
    stopmotion = function ( e ){
          clearTimeout(lefttime);
          clearTimeout(righttime);
          movestate="";
      }

    _ = function (e) { return document.getElementById ? document.getElementById(e) : eval("document.all."+v); }

}