function first_letter(letter){
	if(letter && document.frm_symbol.letter_type){
		if(document.frm_symbol.letter_type[0].checked) symbol_type = 'nasdaq';
		else symbol_type = 'nyse';
		open( siteRoot + 'companies/'+symbol_type+'_'+letter+'.html', 'companies', 'scrollbars=1,resizable=0,left='+ ((screen.width-300)/2) +',top='+ ((screen.height-200)/2) +',height=200,width=300');
}	}
function letter(letter){
	if(letter && document.frm.letter_type){
		if(document.frm.letter_type[0].checked) symbol_type = 'nasdaq';
		else symbol_type = 'nyse';
		self.location.href = siteRoot + 'companies/' + symbol_type+'_'+letter+'.html';
	} else location.href =  siteRoot + 'companies/nasdaq_0.html';
}
function send_symbol(obj){
	if(opener){
		if(opener.document.frm_symbol.letter_type){
			no_end = self.location.href.length - 7;
			no_begin = self.location.href.lastIndexOf('/') + 1;
			l_type = self.location.href.substring(no_begin,no_end);
			if(l_type == 'nasdaq') opener.document.frm_symbol.letter_type[0].checked = true
			else opener.document.frm_symbol.letter_type[1].checked = true
		}
		opener.document.frm_symbol.symbol.value = obj.value;
		self.close();
}	}
function go_type(){
	no = self.location.href.length;
	letter = self.location.href.substring(no-6, no-5);
	if(document.frm.letter_type){
		if(document.frm.letter_type[0].checked) symbol_type = 'nasdaq';
		else symbol_type = 'nyse';
		self.location.href =  siteRoot+'companies/'+symbol_type+'_'+letter+'.html';
}	}