function ao(c,txt,val,idx){
	c.options[idx] = new Option(txt,val);
}
function setSizes(c, s){
	var id;
	var x=0;
	var opt;
	if (!s || !c)
		return;
	if (c.selectedIndex < 1){
		clearSizes();
		return;
	}
	id = c.options[c.selectedIndex].value;
	s.options.length = 0;
	opt = new Option('Please select a size', '');
	s.options[x++] = opt;
	switch(id){
	
		
		    case "Anodized Aluminum":
		  
		    ao(s, "NB0315ALRPRF-3 ROW  15' (30 SEATS) - $769.99","NB0315ALRPRF-3 ROW  15' (30 SEATS)", x++);
		  
		    ao(s, "NB0315ALRSTD-3 ROW  15' (30 SEATS) - $637.99","NB0315ALRSTD-3 ROW  15' (30 SEATS)", x++);
		  
		    ao(s, "NB0321ALRPRF-3 ROW 21' (42 SEATS) - $1028.49","NB0321ALRPRF-3 ROW 21' (42 SEATS)", x++);
		  
		    ao(s, "NB0321ALRSTD-3 ROW 21' (42 SEATS) - $841.49","NB0321ALRSTD-3 ROW 21' (42 SEATS)", x++);
		  
		    ao(s, "NB0324ALRPRF-3 ROW 24' (48 SEATS) - $1187.99","NB0324ALRPRF-3 ROW 24' (48 SEATS)", x++);
		  
		    ao(s, "NB0324ALRSTD-3 ROW 24' (48 SEATS) - $1006.49","NB0324ALRSTD-3 ROW 24' (48 SEATS)", x++);
		  
		    ao(s, "NB0415ALRPRF-4 ROW 15' LONG(40 SEATS) - $1050.49","NB0415ALRPRF-4 ROW 15' LONG(40 SEATS)", x++);
		  
		    ao(s, "NB0415ALRSTD-4 ROW 15' LONG(40 SEATS) - $857.99","NB0415ALRSTD-4 ROW 15' LONG(40 SEATS)", x++);
		  
		    ao(s, "NB0421ALRPRF-4 ROW 21' LONG(56 SEATS) - $1446.49","NB0421ALRPRF-4 ROW 21' LONG(56 SEATS)", x++);
		  
		    ao(s, "NB0421ALRSTD-4 ROW 21' LONG(56 SEATS) - $1187.99","NB0421ALRSTD-4 ROW 21' LONG(56 SEATS)", x++);
		  
		    ao(s, "NB0424ALRPRF-4 ROW 24' LONG (64SEATS) - $1671.99","NB0424ALRPRF-4 ROW 24' LONG (64SEATS)", x++);
		  
		    ao(s, "NB0424ALRSTD-4 ROW24' LONG(64 SEATS) - $1374.99","NB0424ALRSTD-4 ROW24' LONG(64 SEATS)", x++);
		  
		    ao(s, "NB0427ALRPRF-4 ROW 27\" LONG (72 SEATS) - $1908.49","NB0427ALRPRF-4 ROW 27\" LONG (72 SEATS)", x++);
		  
		    ao(s, "NB0427ALRSTD-4 ROW 27' LONG(72 SEATS) - $1523.49","NB0427ALRSTD-4 ROW 27' LONG(72 SEATS)", x++);
		  
		    break;
		  
	  
	}
}

function initSizes (){
	var s, c, f=document.frmOrder;
	
	if ( !f )
		return;
			
	s = f.sizes;
	c = f.colors;
	if (!c || !s)
		return;
	if (c.selectedIndex > 0){
		setSizes(c, s);
	} else {		
		s.options.length = 0;
		var opt = new Option('Please select a color first', '');
		s.options[0] = opt;
	}
}
function clearSizes (){
	var s, c, f=document.frmOrder;
	
	if ( !f )
		return;
	
	s = f.sizes;
	c = f.colors;
	if (!c || !s)
		return;
	if (c.selectedIndex > 0)
		return;
	s.options.length = 0;
	var opt = new Option('Please select a color first', '');
	s.options[0] = opt;
}
window.onload = initSizes;