/*
 * JTip
 * By Cody Lindley (http://www.codylindley.com)
 * Under an Attribution, Share Alike License
 * JTip is built on top of the very light weight jquery library.
 
 * Modifications by Rey Bango and Karl Swedberg
 */

//on page load (as soon as it is ready) call JT_init
jQuery(document).ready(JT_init);

function JT_init()
{
    jQuery("a.jTip").wrap('<span style="position:relative;"></span>').hover(function() {JT_show(this.href,this.id,this.name)},function() {}).click(function(){return false});	   
}

function JT_show(url,linkId,title)
{
    jQuery('#JT, #JT_arrow_left, #JT_arrow_right').hide().remove();
    if(title == false)title="&nbsp;";
    var de = document.documentElement;
    var w = self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
    var hasArea = w - getAbsoluteLeft(linkId);
    var clickElementy = getAbsoluteTop(linkId) - 3; //set y position
    var queryString = url.replace(/^[^\?]+\??/,'');
    var params = parseQuery( queryString );
    if( params['width'] === undefined )
    {
        params['width'] = 250;
    }
    if ( params['link'] !== undefined )
    {
        jQuery('#' + linkId).bind('click',function(){window.location = params['link']});
        jQuery('#' + linkId).css('cursor','pointer');
    }
    if( hasArea>((params['width']*1)+75) )
    {
        jQuery("body").append("<div id='JT' style='width:"+params['width']*1+"px'><div id='JT_close_left'>"+title+"</div><div id='JT_copy'><div class='JT_loader'><div></div></div>");//right side
        jQuery('body').append('<div id="JT_arrow_left"></div>'); 
        var arrowOffset = getElementWidth(linkId) + 11;
        var clickElementx = getAbsoluteLeft(linkId) + arrowOffset; //set x position
        jQuery('#JT_arrow_left').css({left: (clickElementx - 10) + "px", top: clickElementy +"px"});		
    } else {
        jQuery("body").append("<div id='JT' style='width:"+params['width']*1+"px'><div id='JT_close_right'>"+title+"</div><div id='JT_copy'><div class='JT_loader'><div></div></div>");//left side
        jQuery('body').append('<div id="JT_arrow_right"></div>');
        var clickElementx = getAbsoluteLeft(linkId) - ((params['width']*1) + 20); //set x position
        jQuery('#JT_arrow_right').css({left: (getAbsoluteLeft(linkId) - 20) + "px", top: clickElementy + "px"});		
    }
    if (jQuery.browser.msie) 
    { 
        jQuery('#JT').prepend('<iframe id="jTipiFrame"></iframe>'); // iframe for IE select box z-index issue
        jQuery('#jTipiFrame').width((params['width']*1) + "px");	
    }	
    
    jQuery('#JT').css({left: clickElementx+"px", top: clickElementy +"px"});
   
    jQuery('#JT_copy').load(url, function() 
    {
        //if jtip goes to left side and is partially cut off at left of doc...	  
        if (jQuery('#JT_arrow_right') && clickElementx < 0) 
        {
    	    var JT_width = (getAbsoluteLeft(linkId) - 22);
	    jQuery('#JT').css({left: 2, width: JT_width}); //adjust width to fit
	}
	//get the height of the jtip after loading it
	var jtip_height = jQuery('#JT').height();
	//adjust the top of jTip
	move_jtip();
	if ( (scroll_position + window_height) - clickElementy < jtip_height ) 
	{
	    var adjusted_top = (window_height - jtip_height) - 6 + scroll_position;
    	    if ( adjusted_top - scroll_position < 0 ) 
	    {
    	        jQuery('#JT').css({top: scroll_position + 1});
    	    } else {
    	        jQuery('#JT').css({top: adjusted_top});
    	    }
	}      
    });
    
    jQuery('#JT').show().hover(function(){}, function(){jQuery('#JT, #JT_arrow_left, #JT_arrow_right').hide().remove();});
}

function getElementWidth(objectId) 
{
    x = document.getElementById(objectId);
    return x.offsetWidth;
}

function getAbsoluteLeft(objectId) 
{
    // Get an object left position from the upper left viewport corner
    o = document.getElementById(objectId)
    oLeft = o.offsetLeft            // Get left position from the parent object
    while ( o.offsetParent!=null ) 
    {
	// Parse the parent hierarchy up to the document element
	oParent = o.offsetParent    // Get parent object reference
	oLeft += oParent.offsetLeft // Add parent left position
	o = oParent
    }
    return oLeft
}

function getAbsoluteTop(objectId) 
{
    // Get an object top position from the upper left viewport corner
    o = document.getElementById(objectId);
    oTop = 0;
    if(o.offsetParent) 
    {
	o = o.offsetParent;
    }
    while(o) 
    {
	// Parse the parent hierarchy up to the document element
	oTop += o.offsetTop; // Add parent top position
	o = o.offsetParent;
    }
    return oTop
}

function parseQuery ( query ) 
{
    var Params = new Object ();
    if ( ! query ) return Params; // return empty object
    var Pairs = query.split(/[;&]/);
    for ( var i = 0; i < Pairs.length; i++ ) 
    {
	var KeyVal = Pairs[i].split('=');
        if ( ! KeyVal || KeyVal.length != 2 ) continue;
    	var key = unescape( KeyVal[0] );
        var val = unescape( KeyVal[1] );
        val = val.replace(/\+/g, ' ');
        Params[key] = val;
   }
   return Params;
}

function move_jtip() 
{
    if (window.innerHeight) 
    {
	scroll_position = window.pageYOffset;
	window_height = window.innerHeight;
    } else if (document.documentElement && document.documentElement.scrollTop) {
	scroll_position = document.documentElement.scrollTop;
	window_height = document.documentElement.clientHeight;
    } else if (document.body) {
	scroll_position = document.body.scrollTop;
	window_height = document.body.clientHeight;
    }
}

function blockEvents(evt) 
{
    if ( evt.target )
    {
	evt.preventDefault();
    } else {
	evt.returnValue = false;
    }
}