/**
 * @author Tristan Wahl
 */
var top;
var winheight;
if( self.innerHeight ) {
winheight = self.innerHeight;
} else if( document.documentElement && document.documentElement.clientHeight ) {
winheight = document.documentElement.clientHeight;
} else if( document.body ) {
winheight = document.body.clientHeight;
} 
var wintop = (winheight/2)-90;
if (wintop < 0){wintop = 0};
document.getElementById("content").style.marginTop = wintop + "px";