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/************************************************
 **** MIXED JAVASCRIPT FOR RUNNING EXERCISES ****
 ****    Copyright (c) HL Web 2006-2008      ****
 ************************************************/
 

	// Global javacript variables
var helpText = new Array(help0);
	var helpBoxWidth = 500;
	var cursorPosX = 0;
	var cursorPosY = 0;
	var showHelpLinkList = false;
	var hideDropDown = false;
	var helpBoxTimer = false;
	var tmpTimer = new Array();
	
	// Set Modal Loader properties
	window.onbeforeunload = modalLoader_startTimer;
	var modalLoaderTimer = false;
	

/**
 * Compricer ads variables
 */
var compricerSectionNames = new Array(); 
var compricerSectionValues = new Array(); 
compricerSectionNames[0] = 'Alla kategorier'; 
compricerSectionValues[0] = "combo"; 
compricerSectionNames[1] = 'B&ouml;cker'; 
compricerSectionValues[1] = "books"; 
compricerSectionNames[2] = 'DVD'; 
compricerSectionValues[2] = "dvd"; 
compricerSectionNames[3] = 'Spel'; 
compricerSectionValues[3] = "games"; 
compricerSectionNames[4] = 'Hemelektronik'; 
compricerSectionValues[4] = "electronics"; 
compricerSectionNames[5] = 'Mobiltelefoner'; 
compricerSectionValues[5] = "phones"; 
compricerSectionNames[6] = 'Foto'; 
compricerSectionValues[6] = "photo"; 
compricerSectionNames[7] = 'L&aring;n'; 
compricerSectionValues[7] = "loan"; 
compricerSectionNames[8] = 'Linser'; 
compricerSectionValues[8] = "lens"; 


/**
 * Hide Compricer drop-down list
 * @param string id is the id of the object to hide
 */
function hideTimedObject(objName) {
	if (hideDropDown == true) {
		DHTMLObj(objName).style.display = "none";
	}
}


/**
 * Start timer for hiding Compricer drop-down list
 * @param string id is the id of the object to hide
 */
function startHideTimer(objName) {
	hideDropDown = true;
	setTimeout("hideTimedObject('" + objName + "')", 500);
}


/**
 * Set the hideDropDown value to false to avoid the dropdown from turning invisible
 * @param string objName is the dhtml id of the object to keep visible
 */
function keepVisible(objName) {
	if (hideDropDown == true) {
		hideDropDown = false;
	}
	if (DHTMLObj(objName).style.display != "block") {
		DHTMLObj(objName).style.display = "block";
	}
}


/**
 * Set the section / category to run a given search query in.
 * This function will set the section value in the form and print the section name for the user.
 * @param int index for the array in the compricerSectionValue and compricerSectionName arrays
 */
function compricerSetSection(index) {
	DHTMLObj('compricerSectionValue').value = compricerSectionValues[index];
	DHTMLObj('compricerSectionName').innerHTML = compricerSectionNames[index];
	DHTMLObj('compricerDropDown').style.display = "none";
	DHTMLObj('compricerSearch').focus();
	compricerHideValue = true;
}


/**
 * Skapar en dhtml-referens till ett givet objekt
 */
function DHTMLObj(object) {
	if (document.all) {														// Explorer 4,5
		return document.all[object];
	} else if (document.getElementById) {					// Netscape 6
		return document.getElementById(object);
	} else if (document.layers) {									// Övriga läsare
		document[object].open();
		return document[object];
	}
}


/**
 * Displays or hides a div with a description of a selected area
 * @param int showText is an int representation the index deciding what description to display
 * @param string setDisplay is a string representation of the css display state
 */
function displayHelpBox(showText, setDisplay, width) {
	// Stop the timer
	if (helpBoxTimer) {
		clearTimeout(helpBoxTimer);
	}
	
	// The css "visibility" state was used earlier, so we have to modify the state to valid display format
	if (setDisplay == "visible") {
		setDisplay = "block";
	} else if (setDisplay == "hidden") {
		setDisplay = "none";
	}
	
	// Hack för att gömma select-box i Explorer
	if (showText == 0) {
		if (setDisplay == "block") {
			DHTMLObj("selectBox").style.visibility = "hidden";
		} else {
			DHTMLObj("selectBox").style.visibility = "visible";
		}
	}

	helpBoxWidth = width;
	DHTMLObj('helpBoxContent').innerHTML = helpText[showText];
	var obj = DHTMLObj("helpBox");
	obj.style.width = width + "px";
	obj.style.display = setDisplay;
}


/**
 * En tom funktion som gör att inget händer när man klickar på vissa länkar
 */
function doNothing() {
	return;
}


/**
 * Get vertical scroll position
 * @return int value of the vertical scrolled offset
 */
function getScrollOffset() {
	var b = document.body;
	var d = document.documentElement;
	if (b && b.scrollTop) return body.scrollTop;
	if (d && d.scrollTop) return d.scrollTop;
	if (window.pageYOffset) return window.pageYOffset;
	return 0;
}


/**
 * Öppnar ett nytt fönster med given hjälptext
 */
function help(medVad) {
	egenskaper="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no";
	egenskaper+=",width=450";
	egenskaper+=",height=220,top=150,left=150";
	unik=new Date();
	unik=unik.getSeconds()+"_"+unik.getMinutes()+"_"+unik.getHours();
	window.open("http://glosboken.se/pages/help.php?vad="+medVad,unik,egenskaper);
}


/**
 * Öppnar ett nytt fönster med given bredd och höjd
 */
function newWin (openPage, w, h, scroll) {
	var centerScreen = Math.floor((screen.width / 2) - (w/2));
	var properties="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=" +scroll+ ",resizable=no";
	properties+=",width=" + w + ",height=" + h + ",top=15,left=" +centerScreen;
	unik=new Date();
	unik=unik.getSeconds()+"_"+unik.getMinutes()+"_"+unik.getHours();
	window.open("http://glosboken.se/" + openPage, unik, properties);
}


/**
 * Open a modal box to indicate that the new page is loading.
 */
function modalLoader_startTimer() {
	modalLoaderTimer = setTimeout("modalLoader_display()",500);
}


/**
 * Stop the modal loader timer
 */
function modalLoader_stopTimer() {
	if (modalLoaderTimer) {
		modalLoaderTimer=false;
	}
}


/**
 * Close a modal box to indicate that the new page is loading.
 */
function modalLoader_display() {
	if (modalLoaderTimer) {
		if (DHTMLObj('frm_modal_loader')) {
			var topPosition = 200 + getScrollOffset();
			DHTMLObj('img_loader').style.top = topPosition + 'px';
			DHTMLObj('img_loader').style.display = 'block';
			DHTMLObj('frm_modal_loader').style.display='block';
		}
		modalLoaderTimer = false;
	}
}


/** 
 * sendForm()
 * Änvänds för att enkelt skicka en form via tex onclick eller en href
 * @author: Fredrik Lundmark, 2005-12-14
 * @param: formID	Den aktuella formens id
 * @retun: 
*/
function script_sendForm(formID){
	DHTMLObj(formID).submit();
}


/**
 * Set the position of a given object. The position is given as a number of pixles from the left and top margins
 * @param string obj is the DHTML id of the object to update the position for
 * @param int posX is the number of pixles from the left margin to position the given object
 * @param int posY is the number of pixles from the top margin to position the given object
 */
function setObjectPosition(obj, posX, posY) {
	var object = DHTMLObj(obj);
	object.style.left = posX + "px";
	object.style.top = posY + "px";
}


/**
 * Start trace of cursor position (X and Y coordinates).
 */
function startCursorTracer() {
	if (document.all || document.getElementById) {
		document.body.onmousemove = traceCursor;
		//document.onmousemove = traceCursor;
	} else if (document.layers) {
		window.captureEvents(Event.MOUSEMOVE);
		window.onMouseMove = traceCursor;
	}
}


/**
 * Switch a relation block in the buddyList to visible/hidden and update the corresponding image
 * @param string objName is the id of the DHTML object id to switch position for
 * @param string pos1 is the x and y coordinates to compare the real world against
 * @param string pos2 is the x and y coordinates to set if the coordinates given in pos1 does not match the real world
 */
function switchBgPosition(objName, pos1, pos2) {
	var obj = DHTMLObj(objName);
	if (obj.style.backgroundPosition == pos1) {
		obj.style.backgroundPosition = pos2;
	} else {
		obj.style.backgroundPosition = pos1;
	}
}


/**
 * Switch a given checkbox from unchecked to checked or from checked to unchecked
 * @param string object is the DHTML object id of the checkbox to switch checked state for
 */ 
function switchCheckbox (object) {
	object.checked ? object.checked = false : object.checked = true;
}


/**
 * Swtich a given dhtml object into a new css class
 * @param string objName is the DHTML id of the object to set a new class for
 * @param string cssClassName is the css id of the class to set the object to
 */
function switchClass(objName, cssClassName) {
	var obj;
	
	if (typeof objName == 'string') {
		obj = DHTMLObj(objName);
	} else if (typeof objName == 'object') {
		obj = objName;
	}
	
	if (obj.className != cssClassName) {
		obj.className = cssClassName;
	}
}


/**
 * Switch the css dislay property for a given object [block -> none, none -> block]
 * @param string objName is the DHTML id of the object to switch display for 
 */
function switchDisplay(objName) {
	var obj = DHTMLObj(objName);
	if (obj.style.display != 'block') {
		obj.style.display = 'block';
	} else {
		obj.style.display = 'none';
	}
}


/**
 * Switch to a new tab.
 * This will change the appearance of the tabs and switch to a new set of subTabs
 * @param string tabId is the post-part of the tab DHTML id of the tab to switch to
 */
function switchTab(tabId) {
	for (i=0; i<5; i++) {
		if (DHTMLObj("subTab_" + (i+1))) {
			DHTMLObj("subTab_" + (i+1)).style.display = 'none';
		}
		if (DHTMLObj("topTab_" + i)) {
			DHTMLObj("topTab_" + i).className = "";
			DHTMLObj("topTab_" + i + "_image").style.display = 'none';
			DHTMLObj("topTab_" + i + "_text").style.display = 'block';
			DHTMLObj("topTab_div_" + i).style.backgroundPosition = '0px 44px';
		}
	}

	if (DHTMLObj("subTab_" + (tabId+1))) {
		DHTMLObj("subTab_" + (tabId+1)).style.display = 'inline';
	}
	if (DHTMLObj("topTab_" + tabId)) {
		DHTMLObj("topTab_" + tabId).className = 'active';
		DHTMLObj("topTab_div_" + tabId).style.backgroundPosition = '0px 0px';
		DHTMLObj("topTab_" + tabId + "_text").style.display = 'none';
		DHTMLObj("topTab_" + tabId + "_image").style.display = 'block';
	}
	
	if (tabId > 0) {
		DHTMLObj("topTab_div_" + (tabId-1)).style.backgroundPosition = '0px 22px';
	}
}


/**
 * Trace cursor position for nice display of e.g. help boxes
 * @param event event is the cursor object to use when checking for its position
 */
function traceCursor(myEvent)
{
	myEvent = myEvent || window.event;
	
	if(myEvent.pageX || myEvent.pageY){
    cursorPosX = myEvent.pageX;
    cursorPosY = myEvent.pageY;
  } else {
    cursorPosX = myEvent.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
    cursorPosY = myEvent.clientY + document.body.scrollTop + document.documentElement.scrollTop
    //cursorPosX = myEvent.clientX;
    //cursorPosY = myEvent.clientY;
  }
  
  //cursorPosY += getScrollOffset();
	posX = cursorPosX - (helpBoxWidth - 50);
	posY = cursorPosY + 25;
	
	if (posX < 1) {
		posX = cursorPosX - 50;
	}

	setObjectPosition('helpBox',posX, posY);
}

function GetXmlHttpObject(handler) { 
	var objXmlHttp = null;
	if (navigator.userAgent.indexOf("Opera") >= 0) {
		alert("Den här funktionen fungerar tyvärr inte i Opera. Använd Internet Explorer eller Mozilla Firefox istället."); 
		return; 
	}
	if (navigator.userAgent.indexOf("MSIE") >= 0) { 
		var strName = "Msxml2.XMLHTTP"
		if (navigator.appVersion.indexOf("MSIE 5.5") >= 0) {
			strName = "Microsoft.XMLHTTP";
		} 
		try { 
			objXmlHttp = new ActiveXObject(strName);
			objXmlHttp.onreadystatechange = handler; 
			return objXmlHttp;
		} catch(e) {
			alert("Kopieringsscriptet kan inte köras. Script för ActiveX kan vara avstängt."); 
			return;
		} 
	}
	if (navigator.userAgent.indexOf("Mozilla") >= 0) {
		objXmlHttp = new XMLHttpRequest();
		objXmlHttp.onload = handler;
		objXmlHttp.onerror = handler; 
		return objXmlHttp;
	}
}