//variable to hold ref to current page
var crnt_page_ref;
var col_scheme_ref = 0;

//function to deal with main nav clicks
function mainNavClick(nav_item_ref)
{
	if (nav_item_ref != crnt_page_ref) document.location.href = nav_item_ref+'.asp?col_scheme_ref='+col_scheme_ref;
}


//function to deal with catalogue left nav clicks
function loadPage(filmId)
{
	document.location.href='catalogue.asp?filmId='+filmId+'&col_scheme_ref='+col_scheme_ref;
}


function showNews(news_id)
{
	document.location.href='News.asp?news_id='+news_id+'&col_scheme_ref='+col_scheme_ref;
}


// Manipulate the colour of CSS classes
// init:	initialise using buildRuleObjects() function, 
//			passing comma separated list of CSS class names to be modified
//funct:	use cssToggle() function to change specified CSS class names
//			passing #RRGGBB value

var cssToggleInitialised 	= false;
var ruleSearchList 			= new Array();
var rule_obj 				= new Object();
var rulesObjName;

var inputListAlias;

// constructor
function ruleContent_obj() {
	this.className;
	this.rulePos;
	this.ruleFound = false;
}


// create alias names
function createAlias(input) {

	input = input.replace(/[\*]/g,"");
	input = input.replace(/[#]/g,"hash");
	input = input.replace(/[\.]/g,"dot");
	input = input.replace(/[\s]/g,"space");
	input = input.replace(/[\:]/g,"colon");

	input = input.toLowerCase()
	return input
}

function normalise(input) {

}

// create objects bases on ruleSearchList with cssRule index as properties
function buildRuleObjects(inputList) {
var count, ssCount , cssRuleLength, output, styleSheetLength;
var scanSelectorText, localSelectorText


	rulesObjName = (is_ie)?"rules":"cssRules";
	

	if (inputList) {
			
			//create rule alias names
			
			inputListAlias = createAlias(inputList);

			
			//create rule search lists			
			ruleSearchList = inputList.split(",");
			ruleSearchListAlias = inputListAlias.split(",");
			
			//create rule object instances
			for (count=0;count < ruleSearchList.length;count++) {
				eval("rule_obj." + ruleSearchListAlias[count] + " = new ruleContent_obj()");
				eval("rule_obj." + ruleSearchListAlias[count] + ".className = '" + ruleSearchList[count] + "'");
				//alert(rule_obj[ruleSearchListAlias[count]].className)
			}
			
			//find css rule indexes and assign to rule object instance property

			styleSheetLength = document.styleSheets.length;
			
			for (ssCount=0;ssCount<styleSheetLength;ssCount++) {

				cssRuleLength = eval('document.styleSheets['+ ssCount +'].' + rulesObjName + '.length');
				for (searchCount=0;searchCount<ruleSearchList.length;searchCount++) {
	
						for (count=0;count<cssRuleLength;count++) {
									
							localSelectorText = eval('document.styleSheets['+ ssCount +'].' + rulesObjName + '['+count+'].selectorText')
							localSelectorText = localSelectorText.toLowerCase()
							localSelectorText = localSelectorText.replace(/[\*]/g,"");
							
							scanSelectorText = ruleSearchList[searchCount]
							scanSelectorText = scanSelectorText.toLowerCase()
							
							
							
							//alert("local:" + localSelectorText + "  scan:" + scanSelectorText);
							if (localSelectorText == scanSelectorText) {
								
								rule_obj[ruleSearchListAlias[searchCount]].rulePos = count;
								rule_obj[ruleSearchListAlias[searchCount]].ruleFound = true;
								//alert(rule_obj[ruleSearchListAlias[searchCount]].className)
							}
						}
				}
			}
			
			cssToggleInitialised = true;
	}

}

//switch colours of registered style classes to inputColour
function cssToggle(inputColour, col_ref) {

	col_scheme_ref = col_ref;
	
var count, crntRuleObj, styleSheetLength, cssRuleLength, ssCount;
var defaultStyle, modifyStyleObj

	if (cssToggleInitialised) {

		styleSheetLength = document.styleSheets.length;
		
		for (ssCount=0;ssCount<styleSheetLength;ssCount++) {
				
				cssRuleLength = eval('document.styleSheets['+ ssCount +'].' + rulesObjName + '.length');
				
				for (count=0;count < cssRuleLength; count++) {
				//status += "."
					
					crntRuleObj = rule_obj[ruleSearchListAlias[count]];

					defaultStyle = eval('document.styleSheets['+ ssCount + '].' + rulesObjName + '[' + count + '].selectorText');
					defaultStyle = createAlias(defaultStyle)
					//alert(defaultStyle)
					modifyStyleObj = eval('rule_obj["'+ defaultStyle +'"]');
					
					if (modifyStyleObj) {
						//alert("match" + modifyStyleObj.rulePos)
						eval('document.styleSheets['+ ssCount +'].'+ rulesObjName +'[' + modifyStyleObj.rulePos + '].style.color="'+ inputColour +'"')
					}
					
					

				}
				
				
		}
		
	}
}


/**************************************** Popup window functions ***************************************************/


//page global variables
var window_width, window_height, screen_width, screen_height, avail_width, avail_height;

var pop_win_ref;

//function to get page dimensions
function getPageDimensions() 
{
	window_width = (is_ie) ? document.body.clientWidth : window.innerWidth;
	window_height = (is_ie) ? document.body.clientHeight : window.innerHeight;
	
	avail_width = screen.availWidth;
	avail_height = screen.availHeight;
	
	screen_width = screen.width;
	screen_height = screen.height;
}


//function get xy (returns string for pop up properties
function getWinXY (win_width,win_height) 
{		
	//get page dimensions if not already set
	if (screen_width == null) getPageDimensions();
	
	//determine x y of centered window
	var xpos = Math.round(((avail_width - win_width)/2));
	var ypos = Math.round(((avail_height - win_height)/2)) - ((screen_height - avail_height)/2);	
	
	//start return string
	var return_string = 'width='+win_width+',height=' + win_height;
	
	//return relevant string
	if (is_nav && (is_major <=4)) return (return_string + ',screenX=' + xpos + ',screenY=' + ypos)
	else return (return_string + ',left=' + xpos + ',top=' + ypos)
}



//futura general popup function (centres on page)
function popWin (file_name,win_name,win_width,win_height,is_scroll,is_resize,config) 
{
	//create conf_string for popup
	var conf_string = getWinXY(win_width,win_height);
	conf_string += (is_scroll) ? ',scrollbars=yes' : ',scrollbars=no';
	conf_string += (is_resize) ? ',resizable=yes' : ',resizable=no';
	if (config != null) conf_string += config;
	//window.alert(conf_string);
	
	//open window and set to focus
	if (pop_win_ref && (!pop_win_ref.closed)) pop_win_ref.close();
	pop_win_ref = window.open(file_name,win_name,conf_string);
	pop_win_ref.focus();
}


//Site specific scripts


function launchCompetition()
{
	popWin('http://competition.axiomfilms.co.uk','popup',920,570,false,false,'');
}