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 enter one or more search words.');
		else {
			var url = 'http://psc.swan.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_searchtype()
    {   
        if (document.getElementById('inputcoursesearch').checked)
        {
            // display course search div
            document.getElementById('coursesearch').style.display = 'block';
            document.getElementById('sitesearch').style.display = 'none';
     
        }
        else
        {
            // display site search div
            document.getElementById('sitesearch').style.display = 'block';
            document.getElementById('coursesearch').style.display = 'none';
        }
    }