// JavaScript Document
function trim(inputString) {
   // Removes leading and trailing spaces from the passed string. Also removes
   // consecutive spaces and replaces it with one space. If something besides
   // a string is passed in (null, custom object, etc.) then return the input.
   if (typeof inputString != "string") { return inputString; }
   var retValue = inputString;
   var ch = retValue.substring(0, 1);
   while (ch == " ") { // Check for spaces at the beginning of the string
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }
   ch = retValue.substring(retValue.length-1, retValue.length);
   while (ch == " ") { // Check for spaces at the end of the string
      retValue = retValue.substring(0, retValue.length-1);
      ch = retValue.substring(retValue.length-1, retValue.length);
   }
   while (retValue.indexOf("  ") != -1) { // Note that there are two spaces in the string - look for multiple spaces within the string
      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); // Again, there are two spaces in each of the strings
   }
  // alert(retValue);
   return retValue; // Return the trimmed string back to the user
}
var cnt = 0;
var arr_uebung_01 = new Array(
"Michaela","wird","von","Simon","geliebt.",
"Die","Bücher","werden","von","Jens","zurückgebracht.",
"Der","schwere","Schrank","wird","von","den","Männern","getragen.",
"Dem","Arzt","wird","von","der","Krankenschwester","geholfen.",
"In","München","wird","viel","Bier","getrunken.",
"Das","Auto","muss","repariert","werden.",
"Die","Aufgabe","muss","von","Ihr","berichtigt","werden.",
"Das","Fenster","ist","aufgemacht","worden.",
"Das","Auto","musste","von","seiner","Frau","abgeholt","werden.",
"Der","Stuhl","hat","repariert","werden","müssen."
                             );

function Ergebnis_uebung_01(){
	cnt = 0;
	//alert(cnt +arr_uebung_01.length );
	for(i = 0,cnt=1;i<arr_uebung_01.length;i++){
		 var txtVal = document.getElementById(cnt).value;
		 var txtTrimedString = trim(txtVal);
		// alert(arr_uebung_01[i] + txtTrimedString)
		 if(arr_uebung_01[i] == txtTrimedString)
		   document.getElementById(cnt).style.backgroundColor = "#66FF33";
		 else
		   document.getElementById(cnt).style.backgroundColor = "#ff0033";
		   cnt = cnt + 1;
	}
	
}
function Loesung_uebung_01(){
	
	for(i = 0,cnt=1;i<arr_uebung_01.length;i++){
		//alert('i :- '+i+'\ncnt :- '+cnt);
		if((document.getElementById(cnt).style.backgroundColor == 'rgb(255, 0, 51)'||document.getElementById(cnt).style.backgroundColor == '')||document.getElementById(cnt).style.backgroundColor == '#ff0033'||document.getElementById(cnt).style.backgroundColor == '' ){
  			 document.getElementById(cnt).value = arr_uebung_01[i];
			 document.getElementById(cnt).style.backgroundColor = "#CCCCCC";
		}
		 cnt = cnt + 1;
	}
	cnt = 0;
}
var arr_uebung_02 = new Array(
"Man","muss","die","Bäume","fällen.",
"Man","darf","hier","nicht","fotografieren.",
"Du","bist","nicht","angerufen","worden.",
"Man","muss","die","Häuser","renovieren.",
"Es","musste","stundenlang","gearbeitet","werden.",
"Man","konnte","die","Aufgabe","nicht","lösen.",
"Man","half","ihnen","nicht.",
"Man","hat","nicht","gesprochen.",
"Es","wurde","die","ganze","Nacht","durchgefeiert.",
"Man","wird","die","Todesstrafe","abschaffen."
                              );

function Ergebnis_uebung_02(){
	cnt = 0;
	for(i = 0,cnt=64;i<arr_uebung_02.length;i++){
		 var txtVal = document.getElementById(cnt).value;
		 
		 var txtTrimedString = trim(txtVal);
		// alert(arr_uebung_02[i] + txtTrimedString)
		 if(arr_uebung_02[i] == txtTrimedString)
		   document.getElementById(cnt).style.backgroundColor = "#66FF33";
		 else
		   document.getElementById(cnt).style.backgroundColor = "#ff0033";
		   cnt = cnt + 1;
	}
}
function Loesung_uebung_02(){
	
	cnt = 0;
	
	for(i = 0,cnt=64;i<arr_uebung_02.length;i++){
		//alert(document.getElementById(cnt).style.backgroundColor);
         if((document.getElementById(cnt).style.backgroundColor == 'rgb(255, 0, 51)'||document.getElementById(cnt).style.backgroundColor == '')||document.getElementById(cnt).style.backgroundColor == '#ff0033'||document.getElementById(cnt).style.backgroundColor == '' ){
  		     document.getElementById(cnt).value = arr_uebung_02[i];
			 document.getElementById(cnt).style.backgroundColor = "#CCCCCC";
		 }
		 cnt = cnt + 1;
	}
}
var arr_uebung_03 = new Array(
"Die","fleißigen","Studenten","können","den","schwierigen","Test","nicht","schaffen.",
"Dem","schwer","erkrankten","Patienten","kann","von","den","Ärzten","nicht","geholfen","werden.",
"Viele","fleißige","Hausfrauen","kehren","täglich","den","großen","Innenhof.",
"Ihr","müsst","noch","die","schmutzige","Wäsche","waschen.",
"Die","starken","Männer","mussten","die","kaputten","Tische","in","den","Keller","bringen.",
"Der","schwere","Koffer","konnte","vom","übermüdeten","Fluggast","nicht","gefunden","werden.",
"Die","Sicherheitskontrolle","hat","die","eingeführte","Schmuggelware","konfisziert.",
"Die","fleißige","Sekretärin","muss","die","lange","Reise","des","Chefs","gut","vorbereiten.",
"Die","betrunkenen","Gäste","hatten","bis","zum","frühen","Morgengrauen","gefeiert.",
"-"
                          );

function Ergebnis_uebung_03(){
	cnt = 0;
	for(i = 0,cnt=114;i<arr_uebung_03.length;i++){
		 var txtVal = document.getElementById(cnt).value;
		 
		 var txtTrimedString = trim(txtVal);
		// alert(arr_uebung_03[i] + txtTrimedString)
		 if(arr_uebung_03[i] == txtTrimedString)
		   document.getElementById(cnt).style.backgroundColor = "#66FF33";
		 else
		   document.getElementById(cnt).style.backgroundColor = "#ff0033";
		   cnt = cnt + 1;
	}
}
function Loesung_uebung_03(){
	
	cnt = 0;
	
	for(i = 0,cnt=114;i<arr_uebung_03.length;i++){
		//alert(document.getElementById(cnt).style.backgroundColor);
         if((document.getElementById(cnt).style.backgroundColor == 'rgb(255, 0, 51)'||document.getElementById(cnt).style.backgroundColor == '')||document.getElementById(cnt).style.backgroundColor == '#ff0033'||document.getElementById(cnt).style.backgroundColor == '' ){
  		     document.getElementById(cnt).value = arr_uebung_03[i];
			 document.getElementById(cnt).style.backgroundColor = "#CCCCCC";
		 }
		 cnt = cnt + 1;
	}
}