function show_sub(nummer){
		
		document.getElementById("subnavigation_1").style.visibility = "hidden";
		document.getElementById("subnavigation_2").style.visibility = "hidden";
		document.getElementById("subnavigation_3").style.visibility = "hidden";
		document.getElementById("subnavigation_4").style.visibility = "hidden";
		document.getElementById("subnavigation_5").style.visibility = "hidden";
		document.getElementById("subnavigation_"+nummer).style.visibility = "visible";
	}
	
	function hide_sub(nummer){

		document.getElementById("subnavigation_1").style.visibility = "hidden";
		document.getElementById("subnavigation_2").style.visibility = "hidden";
		document.getElementById("subnavigation_3").style.visibility = "hidden";
		document.getElementById("subnavigation_4").style.visibility = "hidden";
		document.getElementById("subnavigation_5").style.visibility = "hidden";
		document.getElementById("subnavigation_"+nummer).style.visibility = "visible";
	}

	function view(url,w,h){

 		info=window.open(url,"info","width="+w+",height="+h+",toolbar=no,scrollbars=yes,resizeable=yes");	
	}

	function MM_openBrWindow(theURL,winName,features) { //v2.0

		winName=window.open(theURL,winName,features);
		winName.focus();
	}

	function getStyleValue(element, cssProperty) {

		var value = "";
	
		if (window.getComputedStyle) {

			value = window.getComputedStyle(element, null)[cssProperty];
		} 
		else if (element.currentStyle) {
			
			value = element.currentStyle[cssProperty];
		}
		return value;
	}

	function turn(element){
	
		var strDisplay = getStyleValue(document.getElementById(element), "display");
		
		if(strDisplay == "none"){

		
			document.getElementById(element).style.display = "block";
		}
		else {
		
			document.getElementById(element).style.display = "none";
		}
	}
	
	function hide(){
	
		document.getElementById("hide-01").style.display = "none";
		document.getElementById("hide-02").style.display = "none";
		document.getElementById("hide-03").style.display = "none";
		document.getElementById("hide-04").style.display = "none";
	}