/***********************************************
*                                              *
* ScrollScript                                 *
* 2007 Exsisto Ltd.                            *
*                                              *
*  speed:                                      *
*    1 - fastest                               *
*    2 - faster                                *
*    3 - fast                                  *
*    4 - medium                                *
*    5 - slow                                  *
*    6 - slower                                *
*    7 - slowest                               *
*                                              *
***********************************************/
switch(speed)
{
	case 1:
		realSpeed = 2/3;
		break;
	case 2:
		realSpeed = 1/2;
		break;
	case 3:
		realSpeed = 1/3;
		break;
	case 4:
		realSpeed = 1/4;
		break;
	case 5:
		realSpeed = 1/5;
		break;
	case 6:
		realSpeed = 1/6;
		break;
	case 7:
		realSpeed = 1/8;
		break;
}
var mainMoveArray = makeFactArray();
var scrollArray = new Array();
function makeFactArray()
{
	middle = Math.floor((1/7)*elementDim);
	if(middle%2 != elementDim%2)
	{
		middle++;
	}
	to_middle = (elementDim-middle)/2;
	to_middle_array = new Array (1,1,1,1,1,1,1,1,1);for(i=8;i>=0;i--)
	{
		to_middle_array[i] = Math.floor((realSpeed)*to_middle);
		to_middle -= Math.floor((realSpeed)*to_middle);}
		while(to_middle > 0)
		{
			for(i=8; i>=0;i--)
			{
				if(to_middle-- > 0)
				to_middle_array[i]++;
			}
		}
		to_end_array = to_middle_array.slice();
		to_end_array.reverse();
		to_middle_array[9] = middle;
		return to_middle_array.concat(to_end_array);
}
function init()
{
	if(getElementsByChildNodes('scrollContent')) {
		var scrollers = getElementsByChildNodes('scrollContent');
		for(i=0;i<scrollers.length;i++)
		{
			var scr = scrollers[i];
			if(document.getElementById('scrollContent')) {
				var sc = document.getElementById('scrollContent');
				var scrollerObj = new theScroller();
				if(orientation == "vertical")
				{
					if(sc.style.top != '')
					{
						scrollerObj.offset = parseInt(sc.style.top);
					}
				}
				else
				{
					if(sc.style.left != '')
					{
						scrollerObj.offset = parseInt(sc.style.left);
					}
				}
				scrollerObj.max = scrollers.length;
				scrollArray.push(scrollerObj);
			}
		}
	}
}
function theScroller ()
{
	var me = this;this.dir = 0;
	this.pos = 0;
	this.offset = 0;
	this.max = 8;
	this.view = oneStepView;
	this.cpos = 0;
	this.is_moving = false;
	this.interval = '';
	this.movearray = mainMoveArray;
}
function panelMove(target)
{
	var scrollerObj = scrollArray[0];
	if(target == 1)
	target = moveStep;
	else if(target == -1) target = -moveStep;
	var request = (target * 2) + scrollerObj.cpos;
	if(request > scrollerObj.max && target > 0)
	{
		target = scrollerObj.max - scrollerObj.cpos - target;
	}
	else if(scrollerObj.cpos + target < 0)
	{
		var result = scrollerObj.cpos + target;target = target - result;
	}
	if(target == 0)
	return;
	scrollerObj.dir = target;
	if(  !scrollerObj.is_moving && ( (scrollerObj.dir > 0 && (scrollerObj.cpos + scrollerObj.view) < scrollerObj.max )  ||  (scrollerObj.dir < 0 && scrollerObj.cpos > 0) ) )
	{
		scrollerObj.is_moving = true;scrollerObj.cpos += scrollerObj.dir;
		scrollerObj.interval = setInterval(function () { makeScroll(scrollerObj) },1);
	}
	scrollTheImages(target, scrollerObj);
}
function makeScroll(scrollerObj)
{
	var sc = document.getElementById( 'scrollContent' );
	if(scrollerObj.pos == scrollerObj.movearray.length)
	{
		scrollerObj.pos = 0;
		clearInterval(scrollerObj.interval);
		scrollerObj.is_moving = false;return;
	}
	scrollerObj.offset += ((-1 * scrollerObj.dir) * scrollerObj.movearray[scrollerObj.pos]);
	if(orientation == "vertical")
	{
		sc.style.top = scrollerObj.offset + 'px';
	}
	else
	{
		sc.style.left = scrollerObj.offset + 'px';
	}
	scrollerObj.pos++;
}
function scrollTheImages(target, scrollerObj)
{
	var leftImg = document.getElementById('scrollImgLeft');
	var rightImg = document.getElementById('scrollImgRight');
	var leftDiv = document.getElementById('scrollLeft');
	var rightDiv = document.getElementById('scrollRight');
	if(target > 0)
	{
		if((scrollerObj.cpos + scrollerObj.view) == scrollerObj.max)
		{
			rightImg.src = url + 'scroll_dis_right.gif';rightDiv.style.cursor = 'arrow';
		}
		leftImg.src = url + 'scroll_act_left.gif';
		leftDiv.style.cursor = 'pointer';
	}
	else
	{
		if(scrollerObj.cpos == 0)
		{
			leftImg.src = url + 'scroll_dis_left.gif';
			leftDiv.style.cursor = 'arrow';
		}
		rightImg.src = url + 'scroll_act_right.gif';
		rightDiv.style.cursor = 'pointer';
	}
}
function getElementsByChildNodes(prnt)
{
	if(document.getElementById(prnt)) {
		var parent = document.getElementById(prnt).childNodes;
		var elements = new Array();
		for (var i = 0; i < parent.length; ++i)elements.push(parent[i]);
		return elements;
	}
}