/* Image w/ description tooltip v2.0
* Created: April 23rd, 2010. This notice must stay intact for usage 
* Author: Dynamic Drive at http://www.dynamicdrive.com/
* Visit http://www.dynamicdrive.com/ for full source code
*/


var ddimgtooltip={

	tiparray:function(){
		var tooltips=[]
		//define each tooltip below: tooltip[inc]=['path_to_image', 'optional desc', optional_CSS_object]
		//For desc parameter, backslash any special characters inside your text such as apotrophes ('). Example: "I\'m the king of the world"
		//For CSS object, follow the syntax: {property1:"cssvalue1", property2:"cssvalue2", etc}

		tooltips[0]=["","Cloud computing - by our definition is about being able to utilise an I.T. infrastructure located on the Internet. When you need to scale your infrastructure rapidly, then cloud computing is for you. Identify your requirements, choose your service providers and establish your connections.", {background:"#DDECFF", width:"300px"}]
		tooltips[1]=["","Software-as-a-Service - is application provision over the Internet. You choose your application, subscribe your number of users and off you go. No worries about scalability, security, resilience or reliability. Those aspects are all part of your service level agreement (SLA).", {background:"#DDECFF", width:"300px"}]
		tooltips[2]=["","Storage - Its the only real consideration you have, when running your business in the cloud. The great thing is, when you run out, you just purchase some more and off you go!", {background:"#DDECFF", width:"300px"}]
		tooltips[3]=["../images/mike.jpg", "Mike Fleming", {background:"white", font:"bold 12px Arial"}]

		return tooltips //do not remove/change this line
	}(),

	tooltipoffsets: [20, -30], //additional x and y offset from mouse cursor for tooltips

	//***** NO NEED TO EDIT BEYOND HERE

	tipprefix: 'imgtip', //tooltip ID prefixes

	createtip:function($, tipid, tipinfo){
		if ($('#'+tipid).length==0){ //if this tooltip doesn't exist yet
			return $('<div id="' + tipid + '" class="ddimgtooltip" />').html(
				'<div style="text-align:center"><img src="' + tipinfo[0] + '" /></div>'
				+ ((tipinfo[1])? '<div style="text-align:left; margin-top:5px">'+tipinfo[1]+'</div>' : '')
				)
			.css(tipinfo[2] || {})
			.appendTo(document.body)
		}
		return null
	},

	positiontooltip:function($, $tooltip, e){
		var x=e.pageX+this.tooltipoffsets[0], y=e.pageY+this.tooltipoffsets[1]
		var tipw=$tooltip.outerWidth(), tiph=$tooltip.outerHeight(), 
		x=(x+tipw>$(document).scrollLeft()+$(window).width())? x-tipw-(ddimgtooltip.tooltipoffsets[0]*2) : x
		y=(y+tiph>$(document).scrollTop()+$(window).height())? $(document).scrollTop()+$(window).height()-tiph-10 : y
		$tooltip.css({left:x, top:y})
	},
	
	showbox:function($, $tooltip, e){
		$tooltip.show()
		this.positiontooltip($, $tooltip, e)
	},

	hidebox:function($, $tooltip){
		$tooltip.hide()
	},


	init:function(targetselector){
		jQuery(document).ready(function($){
			var tiparray=ddimgtooltip.tiparray
			var $targets=$(targetselector)
			if ($targets.length==0)
				return
			var tipids=[]
			$targets.each(function(){
				var $target=$(this)
				$target.attr('rel').match(/\[(\d+)\]/) //match d of attribute rel="imgtip[d]"
				var tipsuffix=parseInt(RegExp.$1) //get d as integer
				var tipid=this._tipid=ddimgtooltip.tipprefix+tipsuffix //construct this tip's ID value and remember it
				var $tooltip=ddimgtooltip.createtip($, tipid, tiparray[tipsuffix])
				$target.mouseenter(function(e){
					var $tooltip=$("#"+this._tipid)
					ddimgtooltip.showbox($, $tooltip, e)
				})
				$target.mouseleave(function(e){
					var $tooltip=$("#"+this._tipid)
					ddimgtooltip.hidebox($, $tooltip)
				})
				$target.mousemove(function(e){
					var $tooltip=$("#"+this._tipid)
					ddimgtooltip.positiontooltip($, $tooltip, e)
				})
				if ($tooltip){ //add mouseenter to this tooltip (only if event hasn't already been added)
					$tooltip.mouseenter(function(){
						ddimgtooltip.hidebox($, $(this))
					})
				}
			})

		}) //end dom ready
	}
}

//ddimgtooltip.init("targetElementSelector")
ddimgtooltip.init("*[rel^=imgtip]")