.head {
/*/*//*/
position: absolute;
/* */
/*/*/
position: fixed;
/* */ 
width:795px; 
height:150px; 
z-index:9; 
left: 0px; 
top: 0px;
clip:  rect(auto, auto, auto, auto);
}

.datum {  
font-family: Arial, Helvetica, sans-serif; 
font-size: 20px; 
font-weight: bold; 
color: #FFFFFF;
/*/*//*/
position: absolute;
/* */
/*/*/
position: fixed;
/* */ 
width:300px; 
height:20px; 
z-index:10; 
left: 10px; 
top: 130px;
clip:        rect(auto, auto, auto, auto);
}

.sidenavi {  
/*/*//*/
position: absolute;
/* */
/*/*/
position: fixed;
/* */ 
width:158px; 
height:250px; 
z-index:11; 
left: 0px; 
top: 165px;
clip:      rect(auto, auto, auto, auto);
}