// 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(
                               "hängt","an",
                               "setzt","an",
                               "stellt","in",
                               "stellt","auf",
                               "hängt","an",
                               "hängt","in",
                               "legt","auf",
                               "hängt","an",
                               "hängt","an",
                               "legt","in"                             
                             );

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(
                              "hängt","das","Bild","an","der","Wand.",
                              "liegt","es","auf","dem","Boden.",
                              "sitzt","man","am","Tisch.",
                              "liegt","Jochen","auf","dem","Tisch.",
                              "stehen","die","Flaschen","im","Keller.",
                              "liegen","sie","in","der","Badewanne.",
                              "stehen","die","Tassen","auf","dem","Tisch.",
                              "hängen","sie","am","Fenster.",
                              "hängt","die","Wäsche","an","der","Wäscheleine.",
                              "liegt","sie","auf","der","Wiese.",
                              "hängen","die","Hemden","im","Schrank.",
                              "liegen","sie","auf","dem","Sofa.",
                              "liegt","die","Zeitung","auf","dem","Tisch.",
                              "liegt","sie","auf","dem","Boden.",
                              "hängt","die","Lampe","an","der","Decke.",
                              "steht","sie","in","der","Ecke.",
                              "hängt","das","Poster","an","der","Wand.",
                              "liegt","es","auf","dem","Bett.",
                              "liegt","der","Hund","in","seinem","Hundekörbchen.",
                              "liegt","Waldi","im","Bett."                             
                             );

function Ergebnis_uebung_02(){
	cnt = 0;
	for(i = 0,cnt=21;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=21;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(
                              "Wohin","setzt","die","Katze","sich?",
                              "Wohin","bringt","Karin","die","leeren","Flaschen?",
                              "Wo","bleibt","Hans","den","ganzen","Tag?",
                              "Wo","liegt","Hannelore","seit","Stunden?",
                              "Wo","stehen","die","Kisten?",
                              "Wo","sitzt","der","Kater?",
                              "Wo","sind","die","leeren","Flaschen?",
                              "Wohin","bringt","Hans","den","Computer?",
                              "Wohin","legt","Hannelore","sich","für","ein","Weilchen?",
                              "Wohin","stellt","er","die","Kisten?"
                          );

function Ergebnis_uebung_03(){
	cnt = 0;
	for(i = 0,cnt=125;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=125;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;
	}
}