// Navigation Script -----------------------------------------------------------------
	timer=0;
	function hideallbut(n){
		for (i=1; i<8; i++){
			if (i!=n) document.getElementById("nav-collum_"+i).style.visibility="hidden";
		}
	}
	function showsubnav(n){
		cleartimer();
		hideallbut(n);
		document.getElementById("nav-collum_"+n).style.visibility="visible";
	}
	function navout(){
		timer=window.setTimeout("clearall()", 500);
	}
	function cleartimer(){
		clearTimeout(timer);
	}
	function clearall(){
		hideallbut(0);
	}


	// Language Button -----------------------------------------------------------------
	languagetimer=0; // Timer
	duration=1000 // how many milliseconds the Layer will stay after a mouseout-event
	function openlanguage(){
		languageover();
		document.getElementById("languagelayer").style.visibility="visible";
	}
	function closelanguage(){
		document.getElementById("languagelayer").style.visibility="hidden";
	}			
	function languageover(){
		clearTimeout(languagetimer);
	}
	function languageout(){
		languagetimer=window.setTimeout("closelanguage()", duration);
	}

	
	
	// Calculate fixed positions for IE --------------------------------------------------
	function footerposition(){
		return document.body.scrollTop+document.body.offsetHeight-56;
	}
	function toolboxposition(){
		return document.body.scrollTop+document.body.offsetHeight-document.getElementById("toolbox").offsetHeight-40;
	}
	function calculatorposition(){
		return document.body.scrollTop+document.body.offsetHeight-document.getElementById("calculator").offsetHeight-15;
	}