var ajax = new Array();

	

	function getTypesList(sel)

	{

		var flrCode = sel.options[sel.selectedIndex].value;

		document.getElementById('type_ID').options.length = 0;	// Empty city select box

		if(flrCode.length > 0){

			var index = ajax.length;

			ajax[index] = new sack();

			

			ajax[index].requestFile = 'admin/libs/getTypes.php?mkID=' + flrCode;	// Specifying which file to get

			ajax[index].onCompletion = function(){ createTypes(index) };	// Specify function that will be executed after file has been found

			ajax[index].runAJAX();		// Execute AJAX function

		}

	}

	

	function createTypes(index)

	{

		var obj = document.getElementById('type_ID');

		eval(ajax[index].response);	// Executing the response from Ajax as Javascript code

	}

	

	/*********

	*

	*	get models based on type lists

	*

	**********/

	

	var ajax = new Array();

	

	function getModelsList(sel)

	{

		var flrCode = sel.options[sel.selectedIndex].value;

		document.getElementById('model_ID').options.length = 0;	// Empty city select box

		if(flrCode.length > 0){

			var index = ajax.length;

			ajax[index] = new sack();

			

			ajax[index].requestFile = 'admin/libs/getModels.php?mdID=' + flrCode;	// Specifying which file to get

			ajax[index].onCompletion = function(){ createModels(index) };	// Specify function that will be executed after file has been found				

			ajax[index].runAJAX();		// Execute AJAX function

		}

	}

	

	function createModels(index)

	{

		var obj = document.getElementById('model_ID');

		eval(ajax[index].response);	// Executing the response from Ajax as Javascript code			

	}

	

	/*********

	*

	*	get grades based on models lists

	*

	**********/

	

	var ajax = new Array();

	

	function getGradeList(sel)

	{

		var flrCode = sel.options[sel.selectedIndex].value;

		document.getElementById('grade_ID').options.length = 0;	// Empty city select box

		if(flrCode.length > 0){

			var index = ajax.length;

			ajax[index] = new sack();

			

			ajax[index].requestFile = 'admin/libs/getGrades.php?mdID=' + flrCode;	// Specifying which file to get

			ajax[index].onCompletion = function(){ createGrades(index) };	// Specify function that will be executed after file has been found				

			ajax[index].runAJAX();		// Execute AJAX function

		}

	}

	

	function createGrades(index)

	{

		var obj = document.getElementById('grade_ID');

		eval(ajax[index].response);	// Executing the response from Ajax as Javascript code			

	}