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function changeImage12(){document.head.src="../images/botton_line/btn_head.gif";}
function changeImage13(){document.back.src="../images/botton_line/btn_back.gif";}
function changeImage14(){document.next.src="../images/botton_line/btn_next.gif";}

function changeImage21(){document.home.src="../images/botton_line/none_btn_home.gif";}
function changeImage22(){document.head.src="../images/botton_line/none_btn_head.gif";}
function changeImage23(){document.back.src="../images/botton_line/none_btn_back.gif";}
function changeImage24(){document.next.src="../images/botton_line/none_btn_next.gif";}

function changeImage31(){document.home.src="../images/botton_line/go_btn_home.gif";}
function changeImage32(){document.head.src="../images/botton_line/go_btn_head.gif";}
function changeImage33(){document.back.src="../images/botton_line/go_btn_back.gif";}
function changeImage34(){document.next.src="../images/botton_line/go_btn_next.gif";}
// -->