function chng_clr_a_1(l) {l.style.background = "#bbbbbb";
						document.getElementById('bot_txt_a').style.background = "#ff9801";}
function chng_clr_a_2(l) {l.style.background = "";
						document.getElementById('bot_txt_a').style.background = "#999999";}
function chng_clr_b_1(l) {l.style.background = "#bbbbbb";
						document.getElementById('bot_txt_b').style.background = "#ff9801";}
function chng_clr_b_2(l) {l.style.background = "";
						document.getElementById('bot_txt_b').style.background = "#999999";}
function chng_clr_c_1(l) {l.style.background = "#bbbbbb";
						document.getElementById('bot_txt_c').style.background = "#ff9801";}
function chng_clr_c_2(l) {l.style.background = "";
						document.getElementById('bot_txt_c').style.background = "#999999";}