#contenu{

width:750px;
/width:800px;
height:400px;
margin-left:220px;
/margin-left:0px;
}
#tandberg{
margin: 0px 0px;

margin-left:300px;
 margin-top:0px;
 /margin-top:0px ;
 width:200px;
height:50px;
}
#lifesize{
margin: 0px 0px;
float:left;

margin-left:100px;
 margin-top:0px;
 /margin-top:0px ;
 width:150px;
height:50px;

}
#cisco{
margin: 0px 0px;
margin-left:500px;
/margin-left:10px;
width:200px;
height:100px;
margin-top:-40px

}
#radvision{
margin: 0px 0px;

margin-top:110px;
margin-left:-180px;
width:100px;
height:50px;
margin-left:130px;


}
#polycom{
margin: 0px 0px;
float:right;
margin-right:150px;

width:200px;
height:50px;
margin-top:-60px;
}

#genedis{
margin: 0px 0px;
float:left;

 margin-top:0px;
 /margin-top:0px ;
 width:200px;
height:150px;

}