//---------------------------------+
//  CARPE  S l i d e r        1.5  |
//  2006 - 01 - 03                 |
//  By Tom Hermansson Snickars     |
//  Copyright CARPE Design         |
//  http://carpe.ambiprospect.com/ |
//  Contact for custom scripts     |
//  or implementation help.        |
//---------------------------------+

// Global vars. You don't need to make changes here to change your sliders.
// Changing the attributes in your (X)HTML file is enough.
var carpeDefaultSliderLength      	= 385
var carpeMaxSliderVal      	  		= 42
var carpeMaxCalcVal      	  		= carpeMaxSliderVal / carpeDefaultSliderLength
var carpeSliderDefaultOrientation 	= 'horizontal'
var carpeSliderClassName          	= 'carpe_slider'
var carpeSliderDisplayClassName   	= 'carpe_slider_display'

// carpeGetElementsByClass: Cross-browser function that returns
// an array with all elements that have a class attribute that
// contains className
function carpeGetElementsByClass(className)
{
	var classElements = new Array()
	var els = document.getElementsByTagName("*")
	var elsLen = els.length
	var pattern = new RegExp("\\b" + className + "\\b")
	for (i = 0, j = 0; i < elsLen; i++)
	{
		if ( pattern.test(els[i].className) )
		{
			classElements[j] = els[i]
			j++
		}
	}
	return classElements;
}

// carpeLeft: Cross-browser version of "element.style.left"
// Returns or sets the horizontal position of an element.
function carpeLeft(elmnt, pos)
{

	if (!(elmnt = document.getElementById(elmnt)))
		return 0;

	if (elmnt.style && (typeof(elmnt.style.left) == 'string'))
	{

		if (typeof(pos) == 'number')
		{
			//pos = pos / carpeMaxCalcVal
			elmnt.style.left = pos + 'px';
			//elmnt.style.left = (pos - 390) + 'px';
		}
		else
		{

			//pos = parseInt(elmnt.style.left);
			pos = parseInt((elmnt.style.left + 390));
			if (isNaN(pos))
				pos = 0;
				//pos = -390;
		}

	}
	else if (elmnt.style && elmnt.style.pixelLeft)
	{

		if (typeof(pos) == 'number')
		{

			//pos = pos / carpeMaxCalcVal
			elmnt.style.pixelLeft = pos;
			//elmnt.style.pixelLeft = (pos - 390);
		}else{

			pos = (elmnt.style.pixelLeft);
			//pos = (elmnt.style.pixelLeft + 390);
		}

	}

	return pos;
}

// carpeTop: Cross-browser version of "element.style.top"
// Returns or sets the vertical position of an element.
function carpeTop(elmnt, pos)
{
	if (!(elmnt = document.getElementById(elmnt))) return 0;
	if (elmnt.style && (typeof(elmnt.style.top) == 'string')) {
		if (typeof(pos) == 'number') elmnt.style.top = pos + 'px';
		else {
			pos = parseInt(elmnt.style.top);
			if (isNaN(pos)) pos = 0;
		}
	}
	else if (elmnt.style && elmnt.style.pixelTop) {
		if (typeof(pos) == 'number') elmnt.style.pixelTop = pos;
		else pos = elmnt.style.pixelTop;
	}
	return pos;
}

// moveSlider: Handles slider and display while dragging
function moveSlider(evnt)
{
	var evnt = (!evnt) ? window.event : evnt; // The mousemove event
	if (mouseover) { // Only if slider is dragged
		x = slider.startOffsetX + evnt.screenX // Horizontal mouse position relative to allowed slider positions
		y = slider.startOffsetY + evnt.screenY // Horizontal mouse position relative to allowed slider positions
		if (x > slider.xMax) x = slider.xMax // Limit horizontal movement
		if (x < 0) x = 0 // Limit horizontal movement
		if (y > slider.yMax) y = slider.yMax // Limit vertical movement
		if (y < 0) y = 0 // Limit vertical movement

		//xx = x / carpeMaxCalcVal;

		carpeLeft(slider.id, x)  // move slider to new horizontal position
		carpeTop(slider.id, y) // move slider to new vertical position

		sliderVal = x + y // pixel value of slider regardless of orientation

		sliderPos = (slider.distance / display.valuecount) * Math.round(display.valuecount * sliderVal / slider.distance)

		// calculate display value
		v = Math.round((sliderPos * slider.scale + slider.from) * Math.pow(10, display.decimals)) / Math.pow(10, display.decimals)

		var obv = MWJ_findObj("withinMilesCalc");
		//display.value = Math.round(carpeMaxCalcVal * v) // put the new value in the slider display element
		obvSVal = Math.round(carpeMaxCalcVal * v);
		if (obvSVal < 41)
		{
			obv.value 	= obvSVal;
			//var wmdn 	= document.getElementById("withinMilesDivNational");

			//if (wmdn.style.display != "none")
			//{
				//$("#withinMilesDivNational").animate({"opacity": 0}, "fast", function ()
				//{
				//	document.getElementById("withinMilesDivNational").style.display = "none";
				//	document.getElementById("withinMilesDiv").style.display = "inline";

				//	$("#withinMilesDiv").animate({"opacity": 1}, "fast", function (){});

				//});
			//}

		}
		else
		{
			obv.value 	= "National";//obvSVal;

			// bada boom, we have a national
			//$("#withinMilesDiv").animate({"opacity": 0}, "fast", function ()
			//{
			//	document.getElementById("withinMilesDiv").style.display = "none";
			//	document.getElementById("withinMilesDivNational").style.display = "inline";

			//	$("#withinMilesDivNational").animate({"opacity": 1}, "fast", function (){});
			//
			//});

		}

		display.value = v

		return false
	}
	return
}

// slide: Handles the start of a slider move.
function slide(evnt)
{
	if (!evnt) evnt = window.event; // Get the mouse event causing the slider activation.
	slider = (evnt.target) ? evnt.target : evnt.srcElement; // Get the activated slider element.
	dist = parseInt(slider.getAttribute('distance')) // The allowed slider movement in pixels.
	slider.distance = dist ? dist : carpeDefaultSliderLength // Deafault distance from global var.
	ori = slider.getAttribute('orientation') // Slider orientation: 'horizontal' or 'vertical'.
	orientation = ((ori == 'horizontal') || (ori == 'vertical')) ? ori : carpeSliderDefaultOrientation
		// Default orientation from global variable.
	displayId = slider.getAttribute('display') // ID of associated display element.
	display = document.getElementById(displayId) // Get the associated display element.
	display.sliderId = slider.id // Associate the display with the correct slider.
	dec = parseInt(display.getAttribute('decimals')) // Number of decimals to be displayed.
	display.decimals = dec ? dec : 0 // Default number of decimals: 0.
	val = parseInt(display.getAttribute('valuecount'))  // Allowed number of values in the interval.
	display.valuecount = val ? val : slider.distance + 1 // Default number of values: the sliding distance.
	from = parseFloat(display.getAttribute('from')) // Min/start value for the display.
	from = from ? from : 0 // Default min/start value: 0.
	to = parseFloat(display.getAttribute('to')) // Max value for the display.
	to = to ? to : slider.distance // Default number of values: the sliding distance.
	slider.scale = (to - from) / slider.distance // Slider-display scale [value-change per pixel of movement].
	if (orientation == 'vertical')
	{
		// Set limits and scale for vertical sliders.
		slider.from = to // Invert for vertical sliders. "Higher is more."
		slider.xMax = 0
		slider.yMax = slider.distance
		slider.scale = -slider.scale // Invert scale for vertical sliders. "Higher is more."
	}
	else
	{
		// Set limits for horizontal sliders.
		slider.from = from
		slider.xMax = slider.distance
		slider.yMax = 0
	}

	slider.startOffsetX = carpeLeft(slider.id) - evnt.screenX // Slider-mouse horizontal offset at start of slide.
	slider.startOffsetY = carpeTop(slider.id) - evnt.screenY // Slider-mouse vertical offset at start of slide.
	mouseover = true
	document.onmousemove 	= moveSlider // Start the action if the mouse is dragged.
	document.onmouseup 		= sliderMouseUp // Stop sliding.
	return false

}

// sliderMouseUp: Handles the mouseup event after moving a slider.
// Snaps the slider position to allowed/displayed value.
function sliderMouseUp()
{
	if (mouseover)
	{
		v = (display.value) ? display.value : 0 // Find last display value.
		pos = (v - slider.from)/(slider.scale) // Calculate slider position (regardless of orientation).
		if (slider.yMax == 0)
		{
			pos = (pos > slider.xMax) ? slider.xMax : pos
			pos = (pos < 0) ? 0 : pos
			carpeLeft(slider.id, pos) // Snap horizontal slider to corresponding display position.
		}

		if (slider.xMax == 0)
		{
			pos = (pos > slider.yMax) ? slider.yMax : pos
			pos = (pos < 0) ? 0 : pos
			carpeTop(slider.id, pos) // Snap vertical slider to corresponding display position.
		}

		if (document.removeEventListener)
		{
			// Remove event listeners from 'document' (W3C).
			document.removeEventListener('mousemove', moveSlider, false)
			document.removeEventListener('mouseup', sliderMouseUp, false)
		}
		else if (document.detachEvent)
		{
			// Remove event listeners from 'document' (IE).
			document.detachEvent('onmousemove', moveSlider)
			document.detachEvent('onmouseup', sliderMouseUp)
		}
	}
	mouseover = false // Stop the sliding.
}

function focusDisplay(evnt)
{
	if (!evnt) evnt = window.event; // Get the mouse event causing the display activation.
	display = (evnt.target) ? evnt.target : evnt.srcElement; // Get the activated display element.
	lock = display.getAttribute('typelock') // Is the user allowed to type into the display?
	if (lock == 'on') {
		display.blur()
	}
	return
}