// JavaScript Document
today = new Date();
cur_year = today.getFullYear();

//fiscal year calculation
//current fiscal year  = 10/01/last year - 09/30/current year
f_start = new Date(cur_year-1, 9, 1);
f_end = new Date(cur_year, 8, 30);

if ((today >= f_start) && (today <= f_end))
	f_year = cur_year-1;
else if (today > f_end)
	f_year = cur_year-1;
else
	f_year = cur_year-2;

//building array for period range
array_1940 = new Array();
for (i=1940; i <= cur_year;i++){  
	array_1940[i-1940] = i; 
}

array_1950 = new Array();
for (i=1950; i <= cur_year;i++){  
	array_1950[i-1950] = i; 
}
array_1957 = new Array();
for (i=1957; i <= cur_year;i++){  
	array_1957[i-1957] = i; 
}
array_1960 = new Array();
for (i=1960; i <= cur_year;i++){  
	array_1960[i-1960] = i; 
}
array_1967 = new Array();
for (i=1967; i <= cur_year;i++){  
	array_1967[i-1967] = i; 
}
array_1970 = new Array();
for (i=1970; i <= f_year;i++){  
	array_1970[i-1970] = i; 
}
array_1971 = new Array();
for (i=1971; i <= f_year;i++){  
	array_1971[i-1971] = i; 
}
array_1972 = new Array();
for (i=1972; i <= cur_year;i++){  
	array_1972[i-1972] = i; 
}
array_1973 = new Array();
for (i=1973; i <= cur_year;i++){  
	array_1973[i-1973] = i; 
}
array_1974 = new Array();
for (i=1974; i <= cur_year;i++){  
	array_1974[i-1974] = i; 
}
array_1975 = new Array();
for (i=1975; i <= cur_year;i++){  
	array_1975[i-1975] = i; 
}
array_1976 = new Array();
for (i=1976; i <= cur_year;i++){  
	array_1976[i-1976] = i; 
}
array_1977 = new Array();
for (i=1977; i <= cur_year;i++){  
	array_1977[i-1977] = i; 
}
array_1979 = new Array();
for (i=1979; i <= cur_year;i++){  
	array_1979[i-1979] = i; 
}
array_1980 = new Array();
for (i=1980; i <= cur_year;i++){  
	array_1980[i-1980] = i; 
}
array_1988 = new Array();
for (i=1988; i <= cur_year;i++){  
	array_1988[i-1988] = i; 
}

  function show() {
	  if ((document.chartbook.category.selectedIndex == 12) ||  (document.chartbook.category.selectedIndex == 16) ||
		  (document.chartbook.category.selectedIndex == 19) ||	(document.chartbook.category.selectedIndex == 20) ||
		  (document.chartbook.category.selectedIndex == 23))
		document.getElementById('hideme').style.visibility='visible';
	
		else 
			document.getElementById('hideme').style.visibility='hidden';
			
		return true;
  }

  function hide() {
		document.getElementById('hideme').style.visibility='hidden';
        return true;
  }
		
function getcount()
{
	var count = cur_year - 1939;  
	return count;
}

function exchange(){
	var i;
	var year = cur_year-1;
	
	//set new values
	if ((document.chartbook.category.selectedIndex == 0) || (document.chartbook.category.selectedIndex == 1)||
		(document.chartbook.category.selectedIndex == 2) || (document.chartbook.category.selectedIndex == 3)){
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1967.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1967[i];
			document.chartbook.strtdate.options[i].text=array_1967[i];
			document.chartbook.enddate.options[i].value=array_1967[i];
			document.chartbook.enddate.options[i].text=array_1967[i];
		}
	}
	else if ((document.chartbook.category.selectedIndex == 4) || (document.chartbook.category.selectedIndex == 6)){
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1972.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1972[i];
			document.chartbook.strtdate.options[i].text=array_1972[i];
			document.chartbook.enddate.options[i].value=array_1972[i];
			document.chartbook.enddate.options[i].text=array_1972[i];
		}
	}
	else if (document.chartbook.category.selectedIndex == 12) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1976.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1976[i];
			document.chartbook.strtdate.options[i].text=array_1976[i];
			document.chartbook.enddate.options[i].value=array_1976[i];
			document.chartbook.enddate.options[i].text=array_1976[i];
		}
	}
	else if ((document.chartbook.category.selectedIndex == 18) || (document.chartbook.category.selectedIndex == 19)) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1957.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1957[i];
			document.chartbook.strtdate.options[i].text=array_1957[i];
			document.chartbook.enddate.options[i].value=array_1957[i];
			document.chartbook.enddate.options[i].text=array_1957[i];
		}
	}
	else if (document.chartbook.category.selectedIndex == 20) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1977.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1977[i];
			document.chartbook.strtdate.options[i].text=array_1977[i];
			document.chartbook.enddate.options[i].value=array_1977[i];
			document.chartbook.enddate.options[i].text=array_1977[i];
		}
	}
	else if ((document.chartbook.category.selectedIndex == 5) || (document.chartbook.category.selectedIndex == 9) || 
			(document.chartbook.category.selectedIndex == 11)){
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1950.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1950[i];
			document.chartbook.strtdate.options[i].text=array_1950[i];
			document.chartbook.enddate.options[i].value=array_1950[i];
			document.chartbook.enddate.options[i].text=array_1950[i];
		}
	}
	else if ((document.chartbook.category.selectedIndex == 7) || (document.chartbook.category.selectedIndex == 8) || 
		(document.chartbook.category.selectedIndex == 22)) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1973.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1973[i];
			document.chartbook.strtdate.options[i].text=array_1973[i];
			document.chartbook.enddate.options[i].value=array_1973[i];
			document.chartbook.enddate.options[i].text=array_1973[i];
		}
	}
	else if (document.chartbook.category.selectedIndex == 10) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1975.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1975[i];
			document.chartbook.strtdate.options[i].text=array_1975[i];
			document.chartbook.enddate.options[i].value=array_1975[i];
			document.chartbook.enddate.options[i].text=array_1975[i];
		}
	}
	else if (document.chartbook.category.selectedIndex == 14) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1979.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1979[i];
			document.chartbook.strtdate.options[i].text=array_1979[i];
			document.chartbook.enddate.options[i].value=array_1979[i];
			document.chartbook.enddate.options[i].text=array_1979[i];
		}
	}
	else if ((document.chartbook.category.selectedIndex == 15)||(document.chartbook.category.selectedIndex == 16)){
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1988.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1988[i];
			document.chartbook.strtdate.options[i].text=array_1988[i];
			document.chartbook.enddate.options[i].value=array_1988[i];
			document.chartbook.enddate.options[i].text=array_1988[i];
		}
	}
	else if (document.chartbook.category.selectedIndex == 17) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1980.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1980[i];
			document.chartbook.strtdate.options[i].text=array_1980[i];
			document.chartbook.enddate.options[i].value=array_1980[i];
			document.chartbook.enddate.options[i].text=array_1980[i];
		}
	}
	else if (document.chartbook.category.selectedIndex == 18) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value = "";
			document.chartbook.enddate.options[i].text = "";
        }//clean up buffer in area code array
		for (i=0; i < array_1960.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1960[i];
			document.chartbook.strtdate.options[i].text=array_1960[i];
			document.chartbook.enddate.options[i].value=array_1960[i];
			document.chartbook.enddate.options[i].text=array_1960[i];
		}
	}
	else if ((document.chartbook.category.selectedIndex == 21) || (document.chartbook.category.selectedIndex == 23)) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1940.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1940[i];
			document.chartbook.strtdate.options[i].text=array_1940[i];
			document.chartbook.enddate.options[i].value=array_1940[i];
			document.chartbook.enddate.options[i].text=array_1940[i];
		}
	}
	else if (document.chartbook.category.selectedIndex == 27) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1940.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1940[i];
			document.chartbook.strtdate.options[i].text=array_1940[i];
			document.chartbook.enddate.options[i].value=array_1940[i];
			document.chartbook.enddate.options[i].text=array_1940[i];
		}
	}
	else if ((document.chartbook.category.selectedIndex == 24) ||(document.chartbook.category.selectedIndex == 28)
			|| (document.chartbook.category.selectedIndex == 29) || (document.chartbook.category.selectedIndex == 30)) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1970.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1970[i];
			document.chartbook.strtdate.options[i].text=array_1970[i];
			document.chartbook.enddate.options[i].value=array_1970[i];
			document.chartbook.enddate.options[i].text=array_1970[i];
		}
	}
	else if ((document.chartbook.category.selectedIndex == 25)||(document.chartbook.category.selectedIndex == 26)) {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < array_1971.length ;i++){ 
			document.chartbook.strtdate.options[i].value=array_1971[i];
			document.chartbook.strtdate.options[i].text=array_1971[i];
			document.chartbook.enddate.options[i].value=array_1971[i];
			document.chartbook.enddate.options[i].text=array_1971[i];
		}
	}
	else {
		for (i = 0; i < document.chartbook.strtdate.options.length; i++) {
			document.chartbook.strtdate.options[i].value = "";
			document.chartbook.strtdate.options[i].text = "";
			document.chartbook.enddate.options[i].value="";
			document.chartbook.enddate.options[i].text="";
        }//clean up buffer in area code array
		for (i=0; i < 1 ;i++){
			document.chartbook.strtdate.options[i].value=year;
			document.chartbook.strtdate.options[i].text=year;
			document.chartbook.enddate.options[i].value=year;
			document.chartbook.enddate.options[i].text=year;
		}
	}
	}//function end