var list_across0 = [
'_contents.htm',
'_reference.htm',
'_index.htm',
'_search.htm'
];
var list_up0 = [
'spt_help.htm',
'window functions.htm',
'triang.htm'
];
var list_down2 = [
'sptfunctionsbycategory.htm',
'mathematical functions.htm',
'data manipulation functions.htm',
'signalgeneratormain.htm',
'analogfilterfunctions.htm',
'fir filter design.htm',
'window functions.htm',
'iir filter design.htm',
'fourierfunctions.htm',
'plotting functions.htm',
'histogram functions.htm'
];
var list_down1 = [
'blackman.htm',
'blackharris3.htm',
'gaussian.htm',
'hamming.htm',
'hanning.htm',
'kaiser.htm',
'nuttall.htm',
'triang.htm',
'winddata.htm'
];
var list_current0 = [
'triang.htm#Description',
'triang.htm#Example'
];
function choose_across0(item)
{	var index          = item.selectedIndex;
	item.selectedIndex = 0;
	if(index > 0)
		document.location = list_across0[index-1];
}
function choose_up0(item)
{	var index          = item.selectedIndex;
	item.selectedIndex = 0;
	if(index > 0)
		document.location = list_up0[index-1];
}
function choose_down2(item)
{	var index          = item.selectedIndex;
	item.selectedIndex = 0;
	if(index > 0)
		document.location = list_down2[index-1];
}
function choose_down1(item)
{	var index          = item.selectedIndex;
	item.selectedIndex = 0;
	if(index > 0)
		document.location = list_down1[index-1];
}
function choose_down0(item)
{	var index          = item.selectedIndex;
	item.selectedIndex = 0;
	if(index > 0)
		document.location = list_down0[index-1];
}
function choose_current0(item)
{	var index          = item.selectedIndex;
	item.selectedIndex = 0;
	if(index > 0)
		document.location = list_current0[index-1];
}