// Javascript library foud on http://www.brainerror.net/scripts_js_blendtrans.php

function opacity(id, opacStart, opacEnd, millisec) {
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}

function shiftOpacity(id, millisec) {
	//if an element is invisible, make it visible, else make it ivisible
	if(document.getElementById(id).style.opacity == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, millisec);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = imagefile;

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function currentOpac(id, opacEnd, millisec) {
	//standard opacity is 100
	var currentOpac = 100;
	
	//if the element has an opacity set, get it
	if(document.getElementById(id).style.opacity < 100) {
		currentOpac = document.getElementById(id).style.opacity * 100;
	}

	//call for the function that changes the opacity
	opacity(id, currentOpac, opacEnd, millisec)
}

function hideSysdream(divId) {
	opacity(divId, 100, 0, 500);
	setTimeout("document.getElementById('"+divId+"').style.display='none'", 600);
}

function windowHeight() {
	var windowHeight=0;
	if (typeof(window.innerHeight)=='number') {
		windowHeight=window.innerHeight;
	}
	else {
		if (document.documentElement && document.documentElement.clientHeight) {
			windowHeight = document.documentElement.clientHeight;
		} else {
			if (document.body&&document.body.clientHeight) {
				windowHeight=document.body.clientHeight;
			}
		}
	}
	return windowHeight;
}


function showSysdream(divId) {
	var showSysdreamTime = 1000;
	var innerHeight = windowHeight();
	if (innerHeight == 0) {
		document.getElementById(divId).style.display = "none";
	} else {
		//sdocument.getElementById(divId).style.height = innerHeight;
		document.getElementById(divId).style.display = "block";
		setTimeout("hideSysdream('"+divId+"');", showSysdreamTime);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = imagefile;

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function blendref(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//make image transparent
	changeOpac(0, imageid);
	//make new image
	document.getElementById(imageid).src = imagefile;
	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function swapImages(i) {
	var images = new Array("/images/sysdream/anim_sysdream_1.png", "/images/sysdream/anim_sysdream_2.png", "/images/sysdream/anim_sysdream_3.png");

	//var txtid = document.getElementById("txt");
	//txtid.innerHTML = i + " - image " + images[i];
	
	blendimage('blenddiv','blendimage', images[i] ,1000);
	i++;

	if (i == 3) { i = 0 };
	setTimeout("swapImages('"+ i +"')", 4000);
}

function swapRef(i) {
	var imagesref = new Array("/images/references/01net.jpg",
												"/images/references/ADP_logo.jpg",
												"/images/references/aol-logo.gif",
												"/images/references/assemblee_nationale.jpg",
												"/images/references/cetelem.gif",
												"/images/references/enpc.gif",
												"/images/references/francetelecom.gif",
												"/images/references/inserm.gif",
												"/images/references/enmm.gif",
												"/images/references/keyrus.gif",
												"/images/references/laposte.gif",
												"/images/references/logo_cetelem2.gif",
												"/images/references/logoDGA.gif",
												"/images/references/logo-institut-pasteur.gif",
												"/images/references/logo_la_poste.jpg",
												"/images/references/logo_ministere-dga.gif",
												"/images/references/Logo-Sagem1.gif",
												"/images/references/logo-skyguide2.gif",
												"/images/references/ministere_de_la_jeunesse.jpg",
												"/images/references/ministere_de_leducation_nationale.gif",
												"/images/references/orange.gif",
												"/images/references/osiatis.jpg",
												"/images/references/pmu_logo.gif",
												"/images/references/reuters.jpg",
												"/images/references/senat.bmp",
												"/images/references/service-de-sante-des-armee.gif",
												"/images/references/siemens-logo.gif",
												"/images/references/skyguide_logo.gif",
												"/images/references/sncf_logo_ratp.gif",
												"/images/references/societegenerale.jpg",
												"/images/references/universite_monptellier.gif",
												"/images/references/viacess.gif");

	
	//var txtid = document.getElementById("txt");
	//txtid.innerHTML = i + " - image " + images[i];
	
	blendref('refdiv','refimg', imagesref[i] ,1000);
	i++;

	if (i == 31) { i = 0 };
	setTimeout("swapRef('"+ i +"')", 4000);
}

function SetCookie(cookieName,cookieValue,nDays) {
 var today = new Date();
 var expire = new Date();
 if (nDays==null || nDays==0) nDays=1;
 expire.setTime(today.getTime() + 3600000*24*nDays);
 document.cookie = cookieName + "=" + escape(cookieValue) + ";expires=" + expire.toGMTString() + ";path=/";
}