function showObject(e, objid) { 
  	 //var obj = e.srcElement;
	 //alert('object id: ' + obj.id);
	 var window_width = parseInt(document.body.clientWidth);
	 var window_height = parseInt(document.body.clientHeight);
	 var right_boundry = window_width - 410;
	 var bottom_boundry = window_height - 310;
	 var left_position = parseInt(e.clientX);
	 var top_position = parseInt(e.clientY);
	 if (right_boundry < left_position) {
	 	left_position = right_boundry;
		}
	 if (bottom_boundry < top_position) {
	 	top_position = bottom_boundry;
		}
	 //alert('window w x h: ' + window_width + ' x ' + window_height);
	  //alert('element position: ' + e.clientX + ', ' + e.clientY);
     document.getElementById(objid).style.visibility = "visible"; 
     document.getElementById(objid).style.left = left_position; 
     document.getElementById(objid).style.top = top_position; 
	
  } 


function hideObject(objid) { 
     document.getElementById(objid).style.visibility = "hidden"; 
}