function point_it(event){
   pos_x = event.offsetX?(event.offsetX): event.pageX-document.getElementById("pointer_div").offsetLeft;
   pos_y = event.offsetY?(event.offsetY): event.pageY-document.getElementById("pointer_div").offsetTop;
   document.getElementById("cross").style.left = (pos_x-7) ;
   document.getElementById("cross").style.top = (pos_y-7) ;
   document.getElementById("cross").style.visibility = "visible" ;
   document.pointform.form_x.value = pos_x;
   document.pointform.form_y.value = pos_y;
}	
function setStyle(objId, style, value) {
   document.getElementById(objId).style[style] = value;
}

function changeText(newText){
   document.getElementById('info').innerHTML=decodeURIComponent(newText);
}

function showBalloon(id) { 
   e = document.getElementById('balloon_' + id);
   e.style.display = 'block';
	  
}
    
function hideBalloon(id) {
   e = document.getElementById('balloon_' + id);
   e.style.display = 'none';
}