if (document.images){
		var ste = new Image()
        ste.src = "http://bluturtles.fr/images/r1_p.gif"
        var stea = new Image()
        stea.src = "http://bluturtles.fr/images/r1_n.gif"

        var prod = new Image()
        prod.src = "http://bluturtles.fr/images/r2_p.gif"
        var proda = new Image()
        proda.src = "http://bluturtles.fr/images/r2_n.gif"

        var appli = new Image()
        appli.src = "http://bluturtles.fr/images/r3_p.gif"
        var applia = new Image()
        applia.src = "http://bluturtles.fr/images/r3_n.gif"

        var solu = new Image()
        solu.src = "http://bluturtles.fr/images/r4_p.gif"
        var solua = new Image()
        solua.src = "http://bluturtles.fr/images/r4_n.gif"

        var conta = new Image()
        conta.src = "http://bluturtles.fr/images/r5_p.gif"
        var contaa = new Image()
        contaa.src = "http://bluturtles.fr/images/r5_n.gif"

        var devis = new Image()
        devis.src = "http://bluturtles.fr/images/r6_p.gif"
        var devisa = new Image()
        devisa.src = "http://bluturtles.fr/images/r6_n.gif"
	}

function inact(imgName) 
    {   if (document.images)
	   document[imgName].src = eval(imgName + '.src'); 
     }

function act(imgName) 
    {   if (document.images) 	
	document[imgName].src = eval(imgName + 'a.src');
     }