function showChart(theDivname){
	var theTabname = "r_" + theDivname;

	// hide all
	document.getElementById("5_jahre").className = "c_invis";
	document.getElementById("r_5_jahre").className = "r_off";
	
	document.getElementById("10_jahre").className = "c_invis";
	document.getElementById("r_10_jahre").className = "r_off";
	
	document.getElementById("15_jahre").className = "c_invis";
	document.getElementById("r_15_jahre").className = "r_off";

	// show selected
	var theDiv = document.getElementById(theDivname);
	theDiv.className = "c_vis";
	var theTab = document.getElementById(theTabname);
	theTab.className = "r_on";
}

		
function showMainChart(theDivname){
	var theTabname = "mr_" + theDivname;

	// hide all
	document.getElementById("m5_jahre").className = "c_invis";
	document.getElementById("mr_m5_jahre").className = "r_off";
	
	document.getElementById("m10_jahre").className = "c_invis";
	document.getElementById("mr_m10_jahre").className = "r_off";
	
	document.getElementById("m15_jahre").className = "c_invis";
	document.getElementById("mr_m15_jahre").className = "r_off";

	// show selected
	var theDiv = document.getElementById(theDivname);
	theDiv.className = "c_vis";
	var theTab = document.getElementById(theTabname);
	theTab.className = "r_on";
}


function showBigChart(theDivname){
	document.getElementById(theDivname).className = "bc_vis";
}


function hideBigChart(theDivname){
	document.getElementById(theDivname).className = "bc_invis";
}