//Doc!

/*
	alertContents				: Response from AJAX
	Changed						: Updates the text box with the new value of the select box
	Clicked						: Resets the value of a text box
	FindInList					: Searches the contents of a select control, not recomended for 250+ items
	findPos						: Find the x and y of an id
	HideDiv						: Hides div and executes function if available [onDivClose]
	lSKeyPress					: Activated when a key is pressed
	makeRequest					: Makes an AJAX call
	MoveInList					: Moves the selected index of a select box
	onDivClose					: Executes predefined finctions
	PosDiv						: Sets the x and y of a div	
	SearchBox					: Searches the contents of a select control, not recomended for 250+ items after 3 charactors
	Selected						: Updated text box when select box is clicked
	ShowSelectDiv				: Displays the select div
	ShowDiv						: Shows div
	UpdateList					: Updates a select control with new xml
	UpdateTextBox				: Updates the textbox
*/

var http_request = false;
   
   var http_request = false;
   var uTargetID = '';
   
   function debugWindow(toDisplay){
	   if (document.getElementById("jsdebug")) {
		   document.getElementById("jsdebug").innerText = toDisplay;
	   }
   }
   
   function makeRequest(url, parameters, targetID) {	   	   

	   debugWindow(url + ' ' + parameters + ' ' + targetID);
	  
      http_request = false;
     
      uTargetID = targetID;            
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/xml');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
     
      http_request.onreadystatechange = alertContents;      
      
      http_request.open('GET', url + parameters, true);
      http_request.send(null);
      
      document.getElementById('img' + uTargetID).src = '/images/searching_progress_blue15.gif';
      
   }

   function alertContents() {
      if (http_request.readyState == 4) {
	      //document.getElementById('imgLSDestinationAirports').src='/images/drop_icon.gif';
         if (http_request.status == 200) {		
	         
	         if (window.ActiveXObject) { // IE         	
	            var doc = http_request.responseText;
	            var xDoc = new ActiveXObject("Microsoft.XMLDOM");	
	            xDoc.loadXML(doc);     	            	           	            
         	} else {
	         	var xDoc = http_request.responseXML;
         	}            
         	
            UpdateList('', 'Select' + uTargetID, '', xDoc);                        
            
            document.getElementById('img' + uTargetID).src = "/images/drop_icon.gif";
         } else {
            alert('There was a problem with the request.');
         }
      }
   }    

	function findPos(obj) {
		var curleft = curtop = 0;
		if (obj.offsetParent) {
			curleft = obj.offsetLeft
			curtop = obj.offsetTop
			while (obj = obj.offsetParent) {
				curleft += obj.offsetLeft
				curtop += obj.offsetTop
			}
		}
		return [curleft,curtop];
	}

	function UpdateList(divID, selectID, textID, lXML){
		while (document.getElementById(selectID).options.length) {
			document.getElementById(selectID).remove(0);
		}				
		var xValue = lXML.getElementsByTagName("Value");
		var xText = lXML.getElementsByTagName("Text");
			
		for (j=0;j<xValue.length;j++){			
			element = document.createElement('OPTION');			
			element.value = xValue[j].childNodes[0].nodeValue;	
			element.text = xText[j].childNodes[0].nodeValue;
			document.getElementById(selectID).options.add(element);
			//document.getElementById(selectID).selectedIndex = 0;
		}
	}		
	
	
	function ShowSelectDiv(divID, focusOnID, selectID, exeFunction) {
		if (document.getElementById(divID).style.display == "block") {			
			HideDiv(divID, focusOnID, selectID, exeFunction);
		} else {
			ShowDiv(divID);						
			PosDiv(divID, focusOnID);
			document.getElementById(selectID).focus();
		}		
	}
	
	function PosDiv(divID, focusOnID){
		//Find the position of the parent box and center the popup to it.
		var c = findPos(document.getElementById(focusOnID));
		
		document.getElementById(divID).style.pixelTop = c[1] + document.getElementById(focusOnID).offsetHeight;
		document.getElementById(divID).style.pixelLeft = c[0] + 1;			
	}
	
	function ShowDiv(divID) {
		document.getElementById(divID).style.display = "block";
	}
	
	function HideDiv(divID, focusOnID, selectID, exeFunction) {
		if (document.getElementById(divID).style.display == "block"){
			document.getElementById(divID).style.display = "none";
			if (document.getElementById('Alert' + divID)) {
					document.getElementById('Alert' + divID).style.display = "none";
			}
			
			if (exeFunction != ''){							
				onDivClose(divID, focusOnID, selectID, exeFunction);
			}
		}
	}
		
	function onDivClose(divID, focusOnID, selectID, exeFunction){
		var exAction = exeFunction.split('|');
		var exParameter = document.getElementById(selectID).value;
		switch(exAction[0]) {
			case "Update": 
				makeRequest('ajax/ajax-funcrtions.asp', '?ft=areas&fp=' + exParameter + '&fl=true', exAction[1]);				
				break;
		}			
	}
	
	function Clicked(lID) {				
		document.getElementById(lID.id).value = "";		
	}
	
	function SearchBox(divID, thisID, textID, exeFunction, selectID, event){
		var searchCriteria = document.getElementById(textID).value;
		var continueSearch = true;
		var keynum;
		
		if(window.event) // IE
		  {
		  keynum = event.keyCode;  
		  }
		else if(event.which) // Netscape/Firefox/Opera
		  {
		  keynum = event.which;  
		  }
		  
		if (keynum == 40){								
				continueSearch = false;
				ShowDiv(divID);
		}		  
		
		if (keynum == 38){								
				continueSearch = false;
				ShowDiv(divID);
		}		  

		if (keynum == 13){								
				continueSearch = false;
		}		
				
		if ((searchCriteria.length >= 3) && (continueSearch)){			
			ShowDiv(divID);
			FindInList(divID, thisID, textID, exeFunction, selectID);
		}
	}

	function LiveSearchBox(divID, thisID, textID, exeFunction, selectID, imgID, targetID, ajaxCall, event){
		var searchCriteria = document.getElementById(textID).value;
		var continueSearch = true;
		var keynum;
		
		if(window.event) // IE
		  {
		  keynum = event.keyCode;  
		  }
		else if(event.which) // Netscape/Firefox/Opera
		  {
		  keynum = event.which;  
		  }
		  
		if (keynum == 40){								
				continueSearch = false;
				//ShowDiv(divID);
		}		  
		
		if (keynum == 38){								
				continueSearch = false;
				//ShowDiv(divID);
		}		  

		if (keynum == 13){								
				continueSearch = false;
		}		
				
		if ((searchCriteria.length >= 3) && (continueSearch)){			
			ShowDiv(divID);
			//FindInList(divID, thisID, textID, exeFunction, selectID);						
			makeRequest('ajax/ajax-funcrtions.asp', '?ft=' + ajaxCall + '&fp=' + searchCriteria + '&fl=true', targetID);		
		}
	}
		
	function FindInList(divID, thisID, textID, exeFunction, selectID) {		
		var searchCriteria = document.getElementById(textID).value;
		
		for(var f=0; f<document.getElementById(selectID).options.length;f++) {
			var currentItem = document.getElementById(selectID).options[f].text;
			if ((currentItem.substring(0,searchCriteria.length).toLowerCase()) == (searchCriteria.toLowerCase())) {
				document.getElementById(selectID).selectedIndex = f;
				break;
			}
		}
	}
	
	function Changed(divID, selectID, textID, exeFunction){		
		UpdateTextBox(selectID, textID);
		if (textID == "TextLSDestinationAreas") {			
			UpdateLocations(selectID, textID);	
		}		
	}
	
	function Selected(divID, selectID, textID, exeFunction) {		
		if (document.getElementById(selectID).selectedIndex == -1) {						
			HideDiv(divID, textID, selectID, '');					
		} else {			
			if (document.getElementById(textID).value == document.getElementById(selectID).options[document.getElementById(selectID).selectedIndex].text) {				
				UpdateTextBox(document.getElementById(selectID), textID);		
				
				HideDiv(divID, textID, selectID, exeFunction);		
			}
		}
	}
	
	function UpdateTextBox(selectID, textID){				
		document.getElementById(textID).value = selectID.options[selectID.selectedIndex].text;
		//document.getElementById(textID.replace('Text','Default')).value = selectID.options[selectID.selectedIndex].value;		
	}
	
	function UpdateLocations(selectID, textID){				
		if (document.getElementById("pDivLSDestinationLocation")) {
			makeRequest('ajax/ajax-funcrtions.asp', '?ft=DestinationLocation&fp=' + selectID.value + '&fl=true', "LSDestinationLocation");					
		}
	}
		
	function MoveInList(divID, selectID, textID, lDirection){
		//Get current selectedIndex		
		var curIndex = document.getElementById(selectID).selectedIndex;
		var maxIndex = document.getElementById(selectID).options.length -1;
				
		if (lDirection == 'up') {
			if ((curIndex - 1) == -1){
				curIndex = 0;
			} else {				
				curIndex--;
			}			
		}
		
		if (lDirection == 'down') {
			if (curIndex + 1 >= maxIndex){
				curIndex = maxIndex;
			} else {			
				curIndex++;			
			}
		}
				
		document.getElementById(selectID).selectedIndex = curIndex;		
		Changed(divID, document.getElementById(selectID), textID, '');
	}
	
	function lSKeyPress(divID, selectID, textID, exeFunction, event) {		
		var keynum;
		var keychar;
		
		if(window.event) // IE
		  {
		  keynum = event.keyCode;  
		  }
		else if(event.which) // Netscape/Firefox/Opera
		  {
		  keynum = event.which;  
		  }
		  
		if (keynum == 40){				
				MoveInList(divID, selectID, textID,'down');
		}		  
		
		if (keynum == 38){				
				MoveInList(divID, selectID, textID,'up');
		}		  

		if (keynum == 13){				
			if (document.getElementById(divID).style.display == 'block'){		
				HideDiv(divID, textID, selectID, exeFunction);			
				
				Changed(divID, document.getElementById(selectID), textID, '');				
			}
		}		
		
		keychar = String.fromCharCode(keynum);
		return;
	}
	
	function SelText(Obj)
	{
		if(Obj.value != "")	{
			Obj.select()
		}
	}

function disableEnterKey(e)
{
     var key;

     if(window.event)
          key = window.event.keyCode;     //IE
     else
          key = e.which;     //firefox

     if(key == 13)
          return false;
     else
          return true;
}