// 7 variables to control behavior
var Car_Image_Width=100;
var Car_Image_Height=75;
var Car_Border=true; // true or false
var Car_Border_Color="white";
var Car_Speed=3;
var Car_Direction=true; // true or false
var Car_NoOfSides=6; // must be 4, 6, 8 or 12

/* array to specify images and optional links.
For 4 sided carousel specify at least 2 images
For 6 sided carousel specify at least 3
For 8 sided carousel specify at least 4
For 12 sided carousel specify at least 6
If Link is not needed keep it ""
*/

var GALERY_URL = "#"; // TODO galery
var Car_Image_Sources=new Array(
"gallery/rotator/portrait01a.jpg",GALERY_URL,
"gallery/rotator/portrait02a.jpg",GALERY_URL,
"gallery/rotator/portrait03a.jpg",GALERY_URL,
"gallery/rotator/portrait04a.jpg",GALERY_URL,
"gallery/rotator/portrait05a.jpg",GALERY_URL,
"gallery/rotator/portrait06a.jpg",GALERY_URL,
"gallery/rotator/portrait07a.jpg",GALERY_URL,
"gallery/rotator/portrait08a.jpg",GALERY_URL,
"gallery/rotator/portrait09a.jpg",GALERY_URL,
"gallery/rotator/portrait10a.jpg",GALERY_URL,
"gallery/rotator/portrait11a.jpg",GALERY_URL,
"gallery/rotator/portrait12a.jpg",GALERY_URL,
"gallery/rotator/portrait13a.jpg",GALERY_URL,
"gallery/rotator/portrait14a.jpg",GALERY_URL,
"gallery/rotator/portrait15a.jpg",GALERY_URL,
"gallery/rotator/portrait16a.jpg",GALERY_URL,
"gallery/rotator/landscape01a.jpg",GALERY_URL,
"gallery/rotator/landscape02a.jpg",GALERY_URL,
"gallery/rotator/landscape03a.jpg",GALERY_URL,
"gallery/rotator/landscape04a.jpg",GALERY_URL,
"gallery/rotator/landscape05a.jpg",GALERY_URL,
"gallery/rotator//auto1a.jpg",GALERY_URL,
"gallery/rotator//auto2a.jpg",GALERY_URL,
"gallery/rotator//auto3a.jpg",GALERY_URL
);

/***************** Редактировать нельзя **********************************/
var CW_I = new Array(Car_NoOfSides / 2 + 1);
var C_ClcW = new Array(Car_NoOfSides / 2);
var C_Coef = new Array(
		3 * Math.PI / 2, 0, 3 * Math.PI / 2, 11 * Math.PI / 6, Math.PI / 6, 3 * Math.PI / 2, 7 * Math.PI / 4, 0,
		Math.PI / 4, 3 * Math.PI / 2, 5 * Math.PI / 3, 11 * Math.PI / 6, 0, Math.PI / 6, Math.PI / 3);
var C_CoefOf = Car_NoOfSides == 4 ? 0 : Car_NoOfSides == 6 ? 2 : Car_NoOfSides == 8 ? 5 : 9;
var C_pre_Img = new Array(Car_Image_Sources.length);
var C_Angle = Car_Direction ? Math.PI / (Car_NoOfSides / 2) : 0;
var C_CrImg = Car_NoOfSides;
var C_MaxW,C_TotalW;
var C_Stppd = false,i,C_LeftOffset,C_HalfNo = Car_NoOfSides / 2;

function Carousel() {
	if (document.getElementById) {
		for (i = 0; i < Car_Image_Sources.length; i += 2) {
			C_pre_Img[i] = new Image();
			C_pre_Img[i].src = Car_Image_Sources[i];
		}
		C_MaxW = Car_Image_Width / Math.sin(Math.PI / Car_NoOfSides) + C_HalfNo + 1;
		var Car_Div = document.getElementById("Carousel");
		for (i = 0; i < C_HalfNo; i++) {
			CW_I[i] = document.createElement("img");
			Car_Div.appendChild(CW_I[i]);
			CW_I[i].style.position = "absolute";
			CW_I[i].style.top = "0px";
			CW_I[i].style.height = Car_Image_Height + "px";
			if (Car_Border) {
				CW_I[i].style.borderStyle = "solid";
				CW_I[i].style.borderWidth = 1 + "px";
				CW_I[i].style.borderColor = Car_Border_Color;
			}
			CW_I[i].src = Car_Image_Sources[2 * i];
			CW_I[i].lnk = Car_Image_Sources[2 * i + 1];
			CW_I[i].onclick = C_LdLnk;
			CW_I[i].onmouseover = C_Stp;
			CW_I[i].onmouseout = C_Rstrt;
		}
		CarImages();
	}
}

function CarImages() {
	if (!C_Stppd) {
		C_TotalW = 0;
		for (i = 0; i < C_HalfNo; i++) {
			C_ClcW[i] = Math.round(Math.cos(Math.abs(C_Coef[C_CoefOf + i] + C_Angle)) * Car_Image_Width);
			C_TotalW += C_ClcW[i];
		}
		C_LeftOffset = (C_MaxW - C_TotalW) / 2;
		for (i = 0; i < C_HalfNo; i++) {
			CW_I[i].style.left = C_LeftOffset + "px";
			CW_I[i].style.width = C_ClcW[i] + "px";
			C_LeftOffset += C_ClcW[i];
		}
		C_Angle += Car_Speed / 720 * Math.PI * (Car_Direction ? -1 : 1);
		if ((Car_Direction && C_Angle <= 0) || (!Car_Direction && C_Angle >= Math.PI / C_HalfNo)) {
			if (C_CrImg == Car_Image_Sources.length)C_CrImg = 0;
			if (Car_Direction) {
				CW_I[C_HalfNo] = CW_I[0];
				for (i = 0; i < C_HalfNo; i++)CW_I[i] = CW_I[i + 1];
				CW_I[C_HalfNo - 1].src = Car_Image_Sources[C_CrImg];
				CW_I[C_HalfNo - 1].lnk = Car_Image_Sources[C_CrImg + 1];
			}
			else {
				for (i = C_HalfNo; i > 0; i--)CW_I[i] = CW_I[i - 1];
				CW_I[0] = CW_I[C_HalfNo];
				CW_I[0].src = Car_Image_Sources[C_CrImg];
				CW_I[0].lnk = Car_Image_Sources[C_CrImg + 1];
			}
			C_Angle = Car_Direction ? Math.PI / C_HalfNo : 0;
			C_CrImg += 2;
		}
	}
	setTimeout("CarImages()", 50);
}

function C_LdLnk(){if(this.lnk)window.location.href=this.lnk;}
function C_Stp(){this.style.cursor=this.lnk?"pointer":"default";C_Stppd=true;}
function C_Rstrt(){C_Stppd=false;}