var WM3ID = "";


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++) {
			
			
			// set hint
			if (count == maxCount) {
				myinfo = document.getElementById('Hint');
				myinfo.innerHTML = "Bitte wählen Sie die Zusatzqualifikation aus";
			}
			
			
			if (count == maxCount) {
				showStep('WM3');
			} else {
				if (count > maxCount) alert("Bitte wählen Sie maximal " + maxCount + " Modul(e) aus.");
				unsetStep('WM3');
				unsetStep('WM2');
				
			}
			
			
  	 	break;
  	 	
  	 	case "WM3":
  	 		
  	 		unsetStep('Adressen');	
  	 		WM3 = document.getElementById('Wahlmodul3');
  	 		
  	 		maxCount = ChoicesWM3;
			count = 0;
			Wahlmodul3 = new Array(maxCount);
			var Modulename;
			
			for (var i = 0; i < WM3.length; i++) {
		
				if (WM3[i].selected) {
			
					ModuleID = WM3[i].value;
					Modulename = WM3[i].text;
					
					WM3ID = WM3[i].value;
			
					// set status
					if (count <= maxCount) {
				
						// save Selection in arr Wahlmodul1
						Wahlmodul3[count] = Modulename;
					
						myinfo = document.getElementById('pv_wahlmodul3');
						// join add too many html breaks
						//myinfo.innerHTML = Wahlmodul1.join("<br>");
						
						info = "";
						for (j in Wahlmodul3) {
	 						if (info != "") info += "<br>";
	 						info += Wahlmodul3[j];
						} // end for (i in arrFR) {
						myinfo.innerHTML = info;
						
						count ++;
					}
					
				} // end if (WM3[i].selected) {
		
			} // end for (var i = 0; i < WM3.length; i++) {
			
			
			// remove this Modulename from WM2
			if (Modulename != "") {
			
				// wenn »Großformatiger Digitaldruck« gewählt wurde, dann ist »Datenvorbereitung Digitaldruck« als W1 Pflicht
				
				WM2Hint = document.getElementById('hint-wahlmodule2');
				//Wahlmodul2 = new Array();

				
				if (WM3ID == 11) {
					
					// get list from Wahlmodul2
					WM2 = document.getElementById('Wahlmodul2');
					
					// check if forced module is set, set if not
					if (!Wahlmodul2[10]) {
						
						Wahlmodul2[10] = arrWM2[10]["Name"];
						
						myinfo = document.getElementById('pv_wahlmodul2');
						myinfo.innerHTML = arrWM2[10]["Name"];
					}
					
					// now only module can be choosen because of forced module
					WM2Hint.innerHTML = "Wählen Sie hier<strong> 1 Modul</strong> aus";;
					
					// avoid multiple selections
					WM2.multiple = false;
					
					
					
				} else {
					
					myinfo = document.getElementById('pv_wahlmodul2');
					myinfo.innerHTML = "";
					
					// remove forced module
					if (Wahlmodul2[10]) Wahlmodul2.splice(10, 1);
					
										
					// now two modules can be choosen
					WM2Hint.innerHTML = "Mit STRING-Taste<strong> 2 Module</strong> wählen";
					myinfo.innerHTML = "";
					
					// allow multiple selections
					WM2 = document.getElementById('Wahlmodul2');
					WM2.multiple = true;
					
				}
				
				unlinkelements('Wahlmodul2');
				MySelect = document.getElementById('Wahlmodul2');
			
				for (var key in arrWM2) {
					
					if (Modulename != arrWM2[key]["Name"]) {
						
						if ((WM3ID == 11 && key != 10) || WM3ID != 11) {
							
							selected = false;
							if (Wahlmodul2[key]) selected = true;
							
							myitem = new Option(arrWM2[key]["Name"],key,false,selected);
							MySelect.options[MySelect.length] = myitem;
						}
					}
				} // end for (key in arrWM2) {

			}
			
			
			if (count == maxCount) {
				showStep('WM2');
			} else {
				if (count > maxCount) alert("Bitte wählen Sie maximal " + maxCount + " Modul(e) aus.");
				unsetStep('WM2');
			}
			
			
			if (Modulename) showStep('WM2');
			
  	 	
  	 	break;
  	 	
  	 	case "WM2":
   	 		
   	 		unsetStep('Adressen');	
   	 		// check selection of WM2:  get values, count and check dependecies
			WM2 = document.getElementById('Wahlmodul2');
			
			if (WM3ID == 11) maxCount = 1;
			else maxCount = ChoicesWM2;
			count = 0;
			Wahlmodul2 = new Array();
			
			if (WM3ID == 11) {
				// set if forced module again
				Wahlmodul2[10] = arrWM2[10]["Name"];
				count = 1;
			}
			
			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;
					
					// set results if selection is valid or print warning
					if (count <= maxCount) {
						
						// save Selection in arr Wahlmodul1
						Wahlmodul2[ModuleID] = Modulename;
					
						myinfo = document.getElementById('pv_wahlmodul2');
						myinfo.innerHTML = "";
						
						// join add too many html breaks
						info = "";
						for (j in Wahlmodul2) {
	 						if (info != "") info += "<br>";
	 						info += Wahlmodul2[j];
						} // end for (i in Wahlmodul2) {
						myinfo.innerHTML = info;
						count ++ ;
					
					}
					
				} // end if (element[i].selected) {	
		
			} // end for (var i = 0; i < element.length; i++) {
			
			
			
			// set hint
			myinfo = document.getElementById('Hint');
			myinfo.innerHTML = "Bitte wählen Sie hier " + maxCount + " Modul(e) aus";
			
			maxCount = ChoicesWM2;
			
			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 "WM3":
   	 		
   	 		// hide element
			myelement = document.getElementById('Zusatzqualifikationen');
			setOpacity(myelement,5);
			
  	 	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 = 11;
			if (total == maxCount) checkStep('WM1');
			
			
  	 	break;
  	 	
  	 	case "WM3":
   	 		
   	 		// show element
			myelement = document.getElementById('Zusatzqualifikationen');
			setOpacity(myelement,9);
			
  	 	break;
  	 	
  	 	case "WM2":
   	 		
   	 		maxCount = ChoicesWM2;
   	 		
   	 		myelement = document.getElementById('Wahlmodule2');
   	 		setOpacity(myelement,9);
	 
			// prepare next step
			total = 11;
			if (total == maxCount) checkStep('WM2');
			
			// set hint
			myinfo = document.getElementById('Hint');
			myinfo.innerHTML = "Wählen Sie hier 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) {
}