var Tooltip = Class.create();Tooltip.prototype = {initialize: function(element, tool_tip) {var options = Object.extend({default_css: true,margin: "0px",padding: "5px",width: "18%",border: "1px solid #c2c2c2",backgroundColor: "#fff",min_distance_x: 15,min_distance_y: 10,delta_x: 0,delta_y: 0,zindex: 1000
}, arguments[2] || {});this.element = $(element);this.options = options;if($(tool_tip)) {this.tool_tip = $(tool_tip);} else {this.tool_tip = $(document.createElement("div"));document.body.appendChild(this.tool_tip);this.tool_tip.addClassName("tooltip");this.tool_tip.appendChild(document.createTextNode(tool_tip));}
this.tool_tip.hide();this.eventMouseOver = this.showTooltip.bindAsEventListener(this);this.eventMouseOut   = this.hideTooltip.bindAsEventListener(this);this.eventMouseMove  = this.moveTooltip.bindAsEventListener(this);this.registerEvents();},destroy: function() {Event.stopObserving(this.element, "mouseover", this.eventMouseOver);Event.stopObserving(this.element, "mouseout", this.eventMouseOut);Event.stopObserving(this.element, "mousemove", this.eventMouseMove);},registerEvents: function() {Event.observe(this.element, "mouseover", this.eventMouseOver);Event.observe(this.element, "mouseout", this.eventMouseOut);Event.observe(this.element, "mousemove", this.eventMouseMove);},moveTooltip: function(event){Event.stop(event);var mouse_x = Event.pointerX(event);var mouse_y = Event.pointerY(event);var dimensions = Element.getDimensions( this.tool_tip );var element_width = dimensions.width;var element_height = dimensions.height;if ( (element_width + mouse_x) >= ( this.getWindowWidth() - this.options.min_distance_x) ){ // too big for X
mouse_x = mouse_x - element_width;mouse_x = mouse_x - this.options.min_distance_x;} else {mouse_x = mouse_x + this.options.min_distance_x;}
if ( (element_height + mouse_y) >= ( this.getWindowHeight() - this.options.min_distance_y) ){ // too big for Y
mouse_y = mouse_y - element_height;mouse_y = mouse_y - this.options.min_distance_y;} else {mouse_y = mouse_y + this.options.min_distance_y;}
this.setStyles(mouse_x, mouse_y);},showTooltip: function(event) {Event.stop(event);this.moveTooltip(event);new Element.show(this.tool_tip);},setStyles: function(x, y){Element.setStyle(this.tool_tip, {position:'absolute',top:y + this.options.delta_y + "px",left:x + this.options.delta_x + "px",zindex:this.options.zindex
});if (this.options.default_css){Element.setStyle(this.tool_tip, {border:               this.options.border,width:                this.options.width,margin:               this.options.margin,padding:              this.options.padding,backgroundColor:      this.options.backgroundColor,zindex:               this.options.zindex,MozBorderRadius:      '10px',WebkitBorderRadius:   '10px'
});}
},hideTooltip: function(event){new Element.hide(this.tool_tip);},getWindowHeight: function(){var innerHeight;if (navigator.appVersion.indexOf('MSIE')>0) {innerHeight = document.body.clientHeight;} else {innerHeight = window.innerHeight;}
return innerHeight;},getWindowWidth: function(){var innerWidth;if (navigator.appVersion.indexOf('MSIE')>0) {innerWidth = document.body.clientWidth;} else {innerWidth = window.innerWidth;}
return innerWidth;}
}