function getAbsPos(p){var s={x:0,y:0};while(p.offsetParent){s.x+=p.offsetLeft;s.y+=p.offsetTop;p=p.offsetParent;}return s;}
function ShowInfo(elt,coord_x,coord_y,name){var b_help=document.getElementById(name);b_help.style.display="block";coord=getAbsPos(elt);coord.x+=coord_x;coord.y+=coord_y;b_help.style.left=coord.x+"px";b_help.style.top=coord.y+"px";}
function HideInfo(name){var b_help=document.getElementById(name);b_help.style.display="none";}