function changeBackground(node) {
	linkElements = node.getElementsByTagName('a');
	linkElements[0].style.background = "url(../img/leftOuter_SelectedLeft.gif) no-repeat"
	linkElements[1].style.background = "url(../img/leftOuter_SelectedMiddle.gif) repeat-x"
	linkElements[2].style.background = "url(../img/leftOuter_SelectedRight.gif) no-repeat"
}
function resetBackground(node) {
	linkElements = node.getElementsByTagName('a');
	linkElements[0].style.background = "url(../img/leftOuter_left.gif) no-repeat"
	linkElements[1].style.background = "url(../img/leftOuter_Middle.gif) repeat-x"
	linkElements[2].style.background = "url(../img/leftOuter_right.gif) no-repeat"
}

/*Login home page*/
function homepageLoginAction(formName)
{   
	var objForm = document.getElementById(formName);
	if(objForm){
   		objForm.submit();    
	}
}

/* submit login form when press Enter*/
function homepageSumbitLogin(e, formName)
{   
	if(window.event) {
		// IE
		keynum = e.keyCode;
	}else if(e.which) {
		// Netscape/Firefox/Opera
		keynum = e.which;
	}
	if (keynum == 13) {
		homepageLoginAction(formName);
	}
}

function getSearchParam(){
	var objLangId = document.getElementById("langId");
	var objLevel = document.getElementById("level");
	var objLangSpoke = document.getElementById("langSpoke");
	
	var searchParam = "";
	if(objLangId){
		if(objLangId.value){
			searchParam = "langId=" + objLangId.value;
		}
	}
	
	if(objLevel){
		if(objLevel.value){
			if(searchParam == ""){
				searchParam = "level=" + objLevel.value;
			}else{
				searchParam += "&level=" + objLevel.value;
			}
		}
	}
	
	if(objLangSpoke){
		if(objLangSpoke.value){
			if(searchParam == ""){
				searchParam = "langSpoke=" + objLangSpoke.value;
			}else{
				searchParam += "&langSpoke=" + objLangSpoke.value;
			}
		}
	}
	
	return searchParam;
}

/*Simple search home page*/
function homepageSimpleSearchAction(baseUrl)
{   
	var nextUrl = baseUrl + '/course/search/simplesearch';	
	var searchParam = getSearchParam();
	
	if(searchParam != ""){
		nextUrl += "?" + searchParam + "&fromhp=1";
	} else {
		nextUrl += "?fromhp=1";
	}
	window.location = nextUrl;
}


/*Advanced search home page*/
function homepageAdvancedSearchAction(baseUrl)
{   
	var nextUrl = baseUrl + '/course/search/advancesearch';
	var searchParam = getSearchParam();
	
	if(searchParam != ""){
		nextUrl += "?" + searchParam + "&fromhp=1";
	} else {
		nextUrl += "?fromhp=1";
	}
	window.location = nextUrl;
}