function getCourseKeyword() {
	var theInputs;
		clearKeywords('txtCourse', 'Search Courses');
		theInputs = document.getElementsByTagName('input');
	  	for (var y=0; y<theInputs.length; y++){
	  		if ( (theInputs[y].type == 'text')&&(theInputs[y].id == 'txtCourse') )  return theInputs[y].value;
		}
		return "";
	}

	function course_search_button_click() {	
		var keyword = getCourseKeyword();
		if (keyword == "") 
			alert('Please first enter some text to search courses.');
		else {
			var url = 'http://psc.kimberley.tafe.wa.edu.au/Search/List.aspx?Mode=Course&SearchBy=&Keyword=' + keyword;	
			void(window.open(url, 'PSCAdvanced', 'height=650,width=750,scrollbars=yes,menubar=yes,navbar=yes,resizable=yes'));
		} 					
		return false;
	}
	
	function course_capture_enter(event) {
	// This routine invokes the course_search_button_click() routine if the user has pressed enter.
	var enter_pressed = (event.keyCode == 13);
	
		if (enter_pressed) course_search_button_click();
	
	}
	
	function site_search_button_click() {	
	var field = '_txtSite';
	var theInputs;
		theInputs = document.getElementsByTagName('input');
	  	for (var y=0; y<theInputs.length; y++){
	  		if (theInputs[y].type == 'text') {
	  			var id = new String();
	  			id = theInputs[y].id;
	  			if (id.indexOf(field) >= 0) document.forms[0].submit();
	  		}
		}
		return false;
	}

	function clearKeywords(fieldName, defValue) {
	var enteredKey = document.getElementById( fieldName );
		if ( enteredKey.value == defValue ) enteredKey.value = "";
	}
	function select_course() {
	// Set the Course text box visible, set the Site text box invisible.
	var txtCourse = document.getElementById( "txtCourse" );
	var txtSite = document.getElementById( "spanSite" );
	var imgCourse = document.getElementById( "imgCourse" );
	var imgSite = document.getElementById( "imgSite" );
		txtCourse.style.display = 'block';
		txtSite.style.display = 'none';
		imgCourse.src = '/SiteCollectionImages/opt_on.gif';
		imgSite.src = '/SiteCollectionImages/opt_off.gif';
		txtCourse.focus();
	}
	
	function select_site() {
	// Set the Site text box visible, set the Course text box invisible.
	var ik = document.getElementById("InputKeywords");
	var txtCourse = document.getElementById( "txtCourse" );
	var txtSite = document.getElementById( "spanSite" );
	var imgCourse = document.getElementById( "imgCourse" );
	var imgSite = document.getElementById( "imgSite" );
		txtSite.style.display = 'block';
		txtCourse.style.display = 'none';
		imgSite.src = '/SiteCollectionImages/opt_on.gif';
		imgCourse.src = '/SiteCollectionImages/opt_off.gif';
	var theInputs = txtSite.getElementsByTagName('input'); 
		if (theInputs.length == 1) theInputs[0].focus();
	}