EcranHaut = screen.height;
EcranLarg = screen.width;

if(EcranLarg>640 && EcranLarg<800) {document.write(largeur);}
else if(EcranLarg>=800 && EcranLarg<1024) {document.write('<div style="width:30%;border:0;margin-left:0;">');}
else if(EcranLarg>=1024 && EcranLarg<1279) {document.write('<div style="width:30%;border:0;margin-left:1%;">');}
else if(EcranLarg>=1279 && EcranLarg<1599) {document.write('<div style="width:30%;border:0;margin-left:8%;">');}
else if(EcranLarg>=1599 ) {document.write('<div style="width:30%;border:0;margin-left:10%;">');}