/* FONS DE LA PAGINA */
	
#imatgefons{
    position: fixed;
    top: 0;
    left: 0;
z-index:-1; 
width:100%; 
height:100%; 
filter:alpha(opacity=30); 
-moz-opacity:.30;
opacity:.30;
	
background: url("img/fons/fons4.jpg") no-repeat center center fixed;  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}