www.gusucode.com > 通讯设备公司网站程序源码 > 通讯设备公司网站程序源码/product/js/productcarousel_cyrano.js

    // 7 variables to control behavior
	var Car_Border=true;		// true or false
	var Car_Border_Color="white";
	var Car_Speed=4;
	var Car_Direction=true;		// true or false
	var Car_NoOfSides=8;		// 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 ""
*/
	/*Car_Image_Sources=new Array(
		"01.jpg","http://www.cctv.com",
		"02.jpg","http://www.cctv.com",
		"03.jpg","", //this slide isn't linked
		"04.jpg","http://www.cctv.com" // NOTE No comma after last line
		);*/
/***************** 处理数组 **********************************/

var len1=Car_Image_Sources.length/2;
for(i=0; i<len1; i++){
	if(Car_Image_Sources[0].length<6){
		Car_Image_Sources.splice(0,2);
	}
}

if(Car_Image_Sources.length/2>1){
	var len2=Car_Image_Sources.length/2;
	for(i=1; i<len2; i++){
		if(Car_Image_Sources[2].length<6){
			Car_Image_Sources.splice(2,2);
		}
	}
}

if(Car_Image_Sources.length/2>2){
	var len3=Car_Image_Sources.length/2;
	for(i=2; i<len3; i++){
		if(Car_Image_Sources[4].length<6){
			Car_Image_Sources.splice(4,2);
		}
	}
}
if(Car_Image_Sources.length/2>3){
	var len4=Car_Image_Sources.length/2;
	for(i=3; i<len4; i++){
		if(Car_Image_Sources[6].length<6){
			Car_Image_Sources.splice(6,2);
		}
	}
}
if(Car_Image_Sources.length/2>4){
	var len5=Car_Image_Sources.length/2;
	for(i=4; i<len5; i++){
		if(Car_Image_Sources[8].length<6){
			Car_Image_Sources.splice(8,2);
		}
	}
}

if(Car_Image_Sources.length/2>5){
	var len6=Car_Image_Sources.length/2;
	for(i=5; i<len6; i++){
		if(Car_Image_Sources[10].length<6){
			Car_Image_Sources.splice(10,2);
		}
	}
}


/***************** DO NOT EDIT BELOW **********************************/
	CW_I=new Array(Car_NoOfSides/2+1);C_ClcW=new Array(Car_NoOfSides/2);
	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;
	C_Pre_Img=new Array(Car_Image_Sources.length);
	var C_Angle=Car_Direction?Math.PI/(Car_NoOfSides/2):0,C_CrImg=Car_NoOfSides,C_MaxW,C_TotalW,
	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;
			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=0+"px";
				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}