function checkStep(myStep) 
{
	
	// sets results, preview and shows element itself
	switch (myStep) {
 	
  	 	case "WM1":
   	 		
   	 		unsetStep('Adressen');
   	 		
   	 		// check selections of WM1: setSelection and check count only, there are no dependencies in WM1
			WM1 = document.getElementById('Wahlmodul1');
			
			maxCount = ChoicesWM1;
			count = 0;
			Wahlmodul1 = new Array(maxCount);
			
			for (var i = 0; i < WM1.length; i++) {
		
				if (WM1[i].selected) {
			
					ModuleID = WM1[i].value;
					Modulename = WM1[i].text;
			
					// set status
					if (count <= maxCount) {
				
						// save Selection in arr Wahlmodul1
						Wahlmodul1[count] = Modulename;
					
						myinfo = document.getElementById('pv_wahlmodul1');
						// join add too many html breaks
						//myinfo.innerHTML = Wahlmodul1.join("<br>");
						
						info = "";
						for (j in Wahlmodul1) {
	 						if (info != "") info += "<br>";
	 						info += Wahlmodul1[j];
						} // end for (i in arrFR) {
						myinfo.innerHTML = info;
						
						count ++;
					}
					
				} // end if (WM1[i].selected) {
		
			} // end for (var i = 0; i < WM1.length; i++) {
			
			if (count == maxCount) {
				showStep('WM2');
			} else {
				if (count > maxCount) alert("Bitte wählen Sie maximal " + maxCount + " Modul(e) aus.");
				unsetStep('WM2');
			}
			
			
  	 	break;
  	 	
  	 	case "WM2":
   	 		unsetStep('Adressen');	
   	 		// check selection of WM2:  get values, count and check dependecies
			WM2 = document.getElementById('Wahlmodul2');
	
			maxCount = ChoicesWM2;
			count = 0;
			validModule = false;
			Wahlmodul2 = new Array(maxCount);
			
			for (var i = 0; i < WM2.length; i++) {
		
				if (WM2[i].selected) {	
					
					// get Module ID and name to check dependecies
					ModuleID = WM2.options[i].value; 
					Modulename = WM2.options[i].text;
					
					// check if there are any dependecies for this module
					validModule = true;
			
					// set results if selection is valid or print warning
					if (validModule && count <= maxCount) {
						
						// save Selection in arr Wahlmodul1
						Wahlmodul2[count] = Modulename;
					
						myinfo = document.getElementById('pv_wahlmodul2');
						// join add too many html breaks
						//myinfo.innerHTML = Wahlmodul2.join("<br>");
						info = "";
						for (j in Wahlmodul2) {
	 						if (info != "") info += "<br>";
	 						info += Wahlmodul2[j];
						} // end for (i in arrFR) {
						myinfo.innerHTML = info;
						count ++;
					
					} else if (!validModule) {
					
						WM2[i].selected = false;	
						warnmsg = "Um das Modul \"" + Modulename + "\" wählen zu können müssen Sie \"" + arrWM2[ModuleID]["Dependecies"] + "\" ausgewählt haben.";
						alert(warnmsg)
						
					} // end if (validSelection)
				} // end if (element[i].selected) {	
		
			} // end for (var i = 0; i < element.length; i++) {
			
				
			if (count == maxCount) {
				showStep('Adressen');
			} else {
				if (count > maxCount) alert("Bitte wählen Sie maximal " + maxCount + " Modul(e) aus.");
			}
			
			
  	 	break;
  	 	
  	 	case "Adressen":
  	 	
   	 		// set hint
			myinfo = document.getElementById('Hint');
			myinfo.innerHTML = "Bitte geben Sie jetzt die Adressen ein";
			
  	 	break;
  	 	
	} // end switch (Step) {
}



function unsetStep(myStep) 
{
	
	// unsets results, preview and hides element itself
	switch (myStep) {
 	
  	 	case "WM1":
   	 		
   	 		// delete results
   	 		Wahlmodul1 = new Array();
   	 		Wahlmodul2 = new Array();
   	 		
   	 		// hide elements, 3 in this case
   	 		myelement = document.getElementById('Wahlmodule');
			setOpacity(myelement,5);
			
			myelement = document.getElementById('Wahlmodule1');
			setOpacity(myelement,5);
			
			// remove status
			myinfo = document.getElementById('pv_wahlmodul1');
			myinfo.innerHTML = "-";
			
  	 	break;
  	 	
  	 	case "WM2":
   	 		
   	 		// delete results
   	 		Wahlmodul2 = new Array();
   	 		
   	 		// hide element
			myelement = document.getElementById('Wahlmodule2');
			setOpacity(myelement,5);
			
			// remove status
			myinfo = document.getElementById('pv_wahlmodul2');
			myinfo.innerHTML = "-";
			
  	 	break;
  	 	
  	 	case "Adressen":
  	 	
   	 		// hide element
			myelement = document.getElementById('Adressen');
			setOpacity(myelement,5);
			
  	 	break;
  	 	
	} // end switch (Step) {
}


function showStep(myStep) 
{
	
	// unsets results, preview and hides element itself
	switch (myStep) {
 	
  	 	case "WM1":

			maxCount = ChoicesWM1;
		 
			// prepare next step
			total = 21;
			if (total == maxCount) checkStep('WM1');
			
			
  	 	break;
  	 	
  	 	case "WM2":
   	 		
   	 		maxCount = ChoicesWM2;
   	 		
   	 		myelement = document.getElementById('Wahlmodule2');
   	 		setOpacity(myelement,9);
	 
			// prepare next step
			total = 21;
			if (total == maxCount) checkStep('WM2');
			
			// set hint
			myinfo = document.getElementById('Hint');
			myinfo.innerHTML = "Bitte wählen Sie W1-Qualifikationen aus";
			
  	 	break;
  	 	
  	 	case "Adressen":
  	 		
  	 		myelement = document.getElementById('Adressen');
			setOpacity(myelement,9);
			
			myelement = document.getElementById('Azubi');
			setOpacity(myelement,9);
			
			myelement = document.getElementById('Ausbildungsbetrieb');
			setOpacity(myelement,9);
			
			// set hint
			myinfo = document.getElementById('Hint');
			myinfo.innerHTML = "Bitte geben Sie jetzt die Adressen ein";
			
			
  	 	break;
  	 	
	} // end switch (Step) {
}