var idphoto;
function visible(){
	vitesseIE=1;
	vitesseFF=60;
	if(document.getElementById) {
		cur=document.getElementById("imageID");
		if(document.all && !window.opera){
			cur.filters.alpha.opacity+=parseFloat(3);
			if (cur.filters.alpha.opacity==100)
				return;
			else
			setTimeout("visible()",vitesseIE);

		}
		else{
			i=parseFloat(cur.style.getPropertyValue("-moz-opacity"));
			i=parseFloat(cur.style.getPropertyValue("opacity"));
			i+=parseFloat(0.1);
			cur.style.setProperty("-moz-opacity", i, "");
			cur.style.setProperty("opacity", i, "");
			if (i>=1)
				return;
			else
				setTimeout("visible()",vitesseFF);
		}
	}
}
function invisible(index){
	vitesseIE=1;
	vitesseFF=60;
	
	if(document.getElementById) {
		cur=document.getElementById("imageID");
		
		if(document.all && !window.opera){
	
			if (index=="1"){
			cur.filters.alpha.opacity=100;
			}
			cur.filters.alpha.opacity-=parseFloat(3);
			if (cur.filters.alpha.opacity==0){ 
			document.getElementById("imageID").src=document.getElementById("imageID").src2;
			document.getElementById('titre').style.top = document.getElementById('imageID').height +257+'px';
			visible();
			return;
			}
			else {
			setTimeout("invisible('0')",vitesseIE);
			}

		}
		else{
			
			if (index=="1"){
				cur.style.setProperty("-moz-opacity", 1, "");
				cur.style.setProperty("opacity", 1, "");
			}
			i=parseFloat(cur.style.getPropertyValue("-moz-opacity"));
			i=parseFloat(cur.style.getPropertyValue("opacity"));
			i-=parseFloat(0.1);
			cur.style.setProperty("-moz-opacity", i, "");
			cur.style.setProperty("opacity", i, "");
			if (i<=0){
				document.getElementById("imageID").src=document.getElementById("imageID").src2;
				document.getElementById('titre').style.top = document.getElementById('imageID').height +257+'px';
				visible();
				return;
			}
			else {
				setTimeout("invisible('0')",vitesseFF);
			
			}
		}
	}
}
function afficher_image(index,image){
	for (i=1;i<5;i++)
		//document.getElementById(i).src=img_non_select.src;
	//document.getElementById(index).src=img_select.src;
	idphoto = index;
	document.getElementById("imageID").src2=image;
	
	if (window.opera){
		document.getElementById("imageID").src=image;
		document.getElementById('titre').style.top = document.getElementById('imageID').height*450/800+257+'px';
		
	}else{
		invisible('1');
	}

}

function plus(){
	for (i=1;i<5;i++){
		if (document.getElementById(i).src==img_select.src){
			i++;
			if (i<=4)
				afficher_image(i,eval ("i"+i+".src"));
			return;
		}
	}
}

function moins(){
	for (i=1;i<5;i++){
		if (document.getElementById(i).src==img_select.src){
			i--;
			if (i>=1)
				afficher_image(i,eval ("i"+i+".src"));
			return;
		}
	}
}