function initAdvSrchForm()
{
	var items = getData();
	var brandSelect = document.getElementById('brandSelect');
	var seriesSelect = document.getElementById('seriesSelect');
	var modelSelect = document.getElementById('modelSelect');
	var option;
	var k=1;
	var brandsDisct = new Array();
	modelSelect.disabled = true;
	seriesSelect.disabled = true; 
	
	brandsDisct[0] = items[0][0];
	for (var i=1; i<items.length; i++) 
	{
		for (var j=0; j<brandsDisct.length; j++)
		{
			if (items[i][0] == brandsDisct[j])
		  	{
				break;
		  	}	  	
			if (j==brandsDisct.length-1)
			{
				brandsDisct[k] = items[i][0];
				k++;
			}
		}
	}
	
	for (var i=0; i<brandsDisct.length; i++) 
	{
		option = new Option(brandsDisct[i], brandsDisct[i]);
		brandSelect.options[i+1] = option;
	}
}

function brandChange()
{
	var items = getData();
	
	var seriesSelect = document.getElementById('seriesSelect');
	var brandSelect = document.getElementById('brandSelect');
 	var modelSelect = document.getElementById('modelSelect');
			
	seriesSelect.length=1;
	if (brandSelect.selectedIndex  != 0 ) seriesSelect.disabled = false;
	else
	{
		seriesSelect.disabled = true;
	}
	modelSelect.selectedIndex = 0;
	modelSelect.disabled = true;
			
	var j=1;
	var k=0;
	var seriesDisct = new Array();
	seriesDisct[0] = items[0][1];
	for (var i=1; i<items.length; i++) 
	{
		for (var j=0; j<seriesDisct.length; j++)
		{
			if (items[i][1] == seriesDisct[j])
		  	{
				break;
		  	}	  	
			if (j==seriesDisct.length-1  && items[i][0] ==  brandSelect.options[brandSelect.selectedIndex].text)
			{
				seriesDisct[k] = items[i][1];
				k++;
			}
		}
	}
	
	for (var i=0; i<seriesDisct.length; i++) 
	{
		option = new Option(seriesDisct[i], seriesDisct[i]);
		seriesSelect.options[i+1] = option;
	}
		
}

function seriesChange()
{
	/*
	var seriesSelect = document.getElementById('seriesSelect');
	var brandSelect = document.getElementById('brandSelect');
	var modelSelect = document.getElementById('modelSelect');		
	modelSelect.length=1;
	if (seriesSelect.selectedIndex  != 0 ) modelSelect.disabled = false;
	else modelSelect.disabled = true;
	var j=1;
	var prev='';
				
	for (var i=0; i < items.length; i++) 
	{	 
		if ( items[i][0] ==  brandSelect.options[brandSelect.selectedIndex].text && 
		     items[i][1] ==  seriesSelect.options[seriesSelect.selectedIndex].text && 
		     items[i][2] != prev)
		{
			var option = new Option(items[i][2], items[i][2]);
			modelSelect.options[j] = option;
			j++;
			prev = items[i][2];
		}
	}
*/
	var items = getData();
	
 	var seriesSelect = document.getElementById('seriesSelect');
	var brandSelect = document.getElementById('brandSelect');
	var modelSelect = document.getElementById('modelSelect');		
			
	modelSelect.length=1;
	if (seriesSelect.selectedIndex  != 0 ) modelSelect.disabled = false;
	else modelSelect.disabled = true;
			
	var j=1;
	var k=0;
	var modelDisct = new Array();
	modelDisct[0] = items[0][2];
	for (var i=1; i<items.length; i++) 
	{
		for (var j=0; j<modelDisct.length; j++)
		{
			if (items[i][2] == modelDisct[j])
		  	{
				break;
		  	}	  	
			if (j==modelDisct.length-1  && items[i][0] ==  brandSelect.options[brandSelect.selectedIndex].text
					&& items[i][1] ==  seriesSelect.options[seriesSelect.selectedIndex].text)
			{
				modelDisct[k] = items[i][2];
				k++;
			}
		}
	}
	
	for (var i=0; i<modelDisct.length; i++) 
	{
		option = new Option(modelDisct[i], modelDisct[i]);
		modelSelect.options[i+1] = option;
	}
}