function Book_Page()
{
image ="";
image_debut="<img src="+"\"";
image_border =" border="+"\""+"0"+"\"";
image_fin="\"";
image_cloture=" >";
var largeur = screen.width ; 
if (largeur >= 1024)
	{
	image_adresse = "images/Book-Grand.gif";
	image_hauteur = " height="+"\""+"45"+"\"";
	image_largeur = " width="+"\""+"94"+"\"";
	}
if (largeur < 1024)
    {
	image_adresse = "images/Book-Petit.gif";
	image_hauteur = " height="+"\""+"22"+"\"";
	image_largeur = " width="+"\""+"45"+"\"";
	}
image=image_debut+image_adresse+image_fin+image_border+image_hauteur+ image_largeur+image_cloture;
return image;
}
document.write(Book_Page());
// <img border="0" src="../images/AvantPage.gif" alt="La toux" width="48 " >