tooltip = null;  
 						 document.onmousemove = updateTooltip;  
  
 						 function updateTooltip(e) {  
    					try {  
    					  x = (document.all) ? window.event.x + document.documentElement.scrollLeft: e.pageX;  
    					  y = (document.all) ? window.event.y + document.documentElement.scrollTop: e.pageY;  
    					  if (tooltip != null) {  
        				tooltip.style.left = (x + 20) + "px";  
        				tooltip.style.top = (y + 20) + "px";  
      					}  
    					} catch (error) { error=null; }  
  						}  
  		
  						function showTooltip(id) {  
    					try {  
    					  tooltip = document.getElementById(id);  
    					  tooltip.style.display = "block"  
   						 } catch (error) { error=null; }  
  						}  
  
  						function hideTooltip() {  
    					try {  
    					  tooltip.style.display = "none";  
   						 } catch (error) { error=null; }  
  						}