//Carrousel pour polvere
/********************************************************
Create a div with transparent place holder in your html	
<div id="carousel" style="position:absolute; left: 30%;">
<img src="placeholder.gif" style="width:404px;height:236px">
</div>
placeholder width:
4 sided: 1.42 * carousel image width + 3
6 sided: 2 * carousel image width +4
8 sided: 2.62 * carousel image width + 5
12 sided: 3.87 * carousel image width + 7
placeholder height: 
carousel image height+2
Insert onload in body tag
<body onload="carousel()">	
*********************************************************/

// 7 variables to control behavior
var Car_Image_Width=180;
var Car_Image_Height=240;
var Car_Border=true;		// true or false
var Car_Border_Color="#cee5ea";
var Car_Speed=3;
var Car_Direction=true;		// true or false
if(!Car_NoOfSides) 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 ""
*/
var current = 0;
var Numero="0";
var LastIndex=Vignette.length-1;
if(window.location.search){Numero=window.location.search;Numero=Numero.substring(1)}
current = 1*Numero - 1;if(current>LastIndex)current=0;if(current<0)current=LastIndex;
Car_Image_Sources=new Array();
for(i=0;i<2*Vignette.length;i+=2)
 {Car_Image_Sources[i]=Vignette[current];Car_Image_Sources[i+1]=Lien[current];current++;if(current>LastIndex)current=0}

/***************** 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;document.icone.src=this.lnk.substr(0,5)+"_icone.gif";}
function C_Rstrt(){C_Stppd=false}
