/*************************************************************************
  dw_tooltip.js   requires: dw_event.js and dw_viewport.js
  version date: May 21, 2005 moved init call to body onload
  (March 14, 2005: minor changes in position algorithm and timer mechanism)
  
  This code is from Dynamic Web Coding at dyn-web.com
  Copyright 2003-5 by Sharon Paine 
  See Terms of Use at www.dyn-web.com/bus/terms.html
  regarding conditions under which you may use this code.
  This notice must be retained in the code as is!
*************************************************************************/

/*  Readable code available for licensed users */

var Tooltip = {
    followMouse: true,
    offX: 8,
    offY: 12,
    tipID: "tipDiv",
    showDelay: 100,
    hideDelay: 200,
ready:false,
timer:null,
tip:null,

init:function(){if(document.createElement&&document.body&&typeof document.body.appendChild!="undefined")
					{if(!document.getElementById(this.tipID))
							{var el=document.createElement("DIV");
								el.id=this.tipID;
								document.body.appendChild(el);
							}
						this.ready=true;
					}
				},

show:function(e,msg){if(this.timer)
						{clearTimeout(this.timer);
							this.timer=0;
						}
					if(!this.ttready)return;
					this.tip=document.getElementById(this.tipID);
					if(this.followMouse)dw_event.add(document,"mousemove",this.trackMouse,true);
					this.writeTip("");
					this.writeTip(msg);viewport.getAll();
					this.positionTip(e);
					this.timer=setTimeout("Tooltip.toggleVis('"+this.tipID+"', 'visible')",this.showDelay);
				},
				
writeTip:function(msg){if(this.tip&&typeof this.tip.innerHTML!="undefined")
							this.tip.innerHTML=msg;
						},
						
positionTip:function(e){if(this.tip&&this.tip.style)
							{var x=e.pageX?e.pageX:e.clientX+viewport.scrollX;
							var y=e.pageY?e.pageY:e.clientY+viewport.scrollY;
							if(x+this.tip.offsetWidth+this.offX>viewport.width+viewport.scrollX)
								{x=x-this.tip.offsetWidth-this.offX;
									if(x<0)x=0;
								}
							else x=x+this.offX;
							if(y+this.tip.offsetHeight+this.offY>viewport.height+viewport.scrollY)
								{y=y-this.tip.offsetHeight-this.offY;
									if(y<viewport.scrollY)
										y=viewport.height+viewport.scrollY-this.tip.offsetHeight;
								}
							else y=y+this.offY;
							this.tip.style.left=x+"px";
							this.tip.style.top=y+"px";
							}
						},
hide:function(){if(this.timer)
					{clearTimeout(this.timer);
					this.timer=0;
					}
				this.timer=setTimeout("Tooltip.toggleVis('"+this.tipID+"', 'hidden')",this.hideDelay);
				if(this.followMouse)
					dw_event.remove(document,"mousemove",this.trackMouse,true);
					this.tip=null;
				},
					
toggleVis:function(id,vis){var el=document.getElementById(id);
							if(el)el.style.visibility=vis;
							},

trackMouse:function(e){e=dw_event.DOMit(e);
						Tooltip.positionTip(e);
						}
						
};
						
						
Tooltip.ttready=true;