/**
 * Blendet element aus / ein
 * 
 * @param back
 */
function whatshow (back) {
  if (back) {
    document.getElementById("box_title").style.visibility = "visible";
    document.getElementById("box_desc").style.visibility = "collapse";
  }
  else {
    document.getElementById("box_desc").style.visibility = "visible";
    document.getElementById("box_title").style.visibility = "collapse";
  }
}

/**
 * 
 */
function getWindowInfo (type) {
	  var myWidth = 0, myHeight = 0;
	  if( typeof( window.innerWidth ) == 'number' ) {
	    // Non-IE
	    myWidth = window.innerWidth;
	    myHeight = window.innerHeight;
	  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
	    // IE 6+ in 'standards compliant mode'
	    myWidth = document.documentElement.clientWidth;
	    myHeight = document.documentElement.clientHeight;
	  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
	    // IE 4 compatible
	    myWidth = document.body.clientWidth;
	    myHeight = document.body.clientHeight;
	  }
	  
	  if (type=='height') {
		  // window.alert( 'Height = ' + myHeight );
		  return myHeight;
	  }
	  else if (type=='width') {
		  // window.alert( 'Width = ' + myWidth );
		  return myWidth;
	  }
	  else if (type=='midheight') {
		  return myHeight/2;
	  }
	  
}

function setMiddle () {
	var mid=getWindowInfo('midheight');
	var margin = document.getElementById('logo_container').style.marginTop;
	mid=mid-70;	
	document.getElementById('logo_container').style.marginTop=mid+'px';
}


function whatshow (back) {
	  if (back) {
	    document.getElementById("box_title").style.visibility = "visible";
	    document.getElementById("box_desc").style.visibility = "collapse";
	  }
	  else {
	    document.getElementById("box_desc").style.visibility = "visible";
	    document.getElementById("box_title").style.visibility = "collapse";
	  }
}

function showDiv (id) {
	var boxname = 'box_'+id;
	document.getElementById("box_about").style.visibility = "collapse";
	document.getElementById("box_impressum").style.visibility = "collapse";
	document.getElementById("box_kontakt").style.visibility = "collapse";
	document.getElementById("box_kontakt").style.visibility = "collapse";
	document.getElementById("box_projekte").style.visibility = "collapse";	
	document.getElementById(boxname).style.visibility = "visible";
}