function Toggle(obj_id, obj)
{
	if(document.getElementById(''+obj_id).style.display=='block'){
		document.getElementById(''+obj_id).style.display='none';
	}else{
		document.getElementById(''+obj_id).style.display='block';
	}

	if(obj.className=='open'){
		obj.className='close';
	}else{
		obj.className='open';
	}
}

//overlay div script////////////////////////////////////////////////////////////////////////////////

function fnShowOptions(strWindow) {
	fnShowOverlay()
	document.getElementById(strWindow).style.display = 'block';
}

function fnHideOptions(strWindow) {
	document.getElementById(strWindow).style.display = 'none';
//	document.getElementById("overlay").style.display = 'none';
}

function gActive() {
	fnHideOptions('insulated');
	fnHideOptions('access');
	fnHideOptions('environmental');
	fnHideOptions('off_site');
	fnHideOptions('iHide');
	fnHideOptions('aHide');
	fnHideOptions('eHide');
	fnHideOptions('oHide');
	changeClassBack('iLink');
	changeClassBack('aLink');
	changeClassBack('eLink');
	changeClassBack('oLink');
}

function iActive() {
	fnHideOptions('group');
	fnHideOptions('access');
	fnHideOptions('environmental');
	fnHideOptions('off_site');
	fnHideOptions('gHide');
	fnHideOptions('aHide');
	fnHideOptions('eHide');
	fnHideOptions('oHide');
	changeClassBack('gLink');
	changeClassBack('aLink');
	changeClassBack('eLink');
	changeClassBack('oLink');
}

function aActive() {
	fnHideOptions('insulated');
	fnHideOptions('group');
	fnHideOptions('environmental');
	fnHideOptions('off_site');
	fnHideOptions('iHide');
	fnHideOptions('gHide');
	fnHideOptions('eHide');
	fnHideOptions('oHide');
	changeClassBack('iLink');
	changeClassBack('gLink');
	changeClassBack('eLink');
	changeClassBack('oLink');
}

function eActive() {
	fnHideOptions('insulated');
	fnHideOptions('access');
	fnHideOptions('group');
	fnHideOptions('off_site');
	fnHideOptions('iHide');
	fnHideOptions('aHide');
	fnHideOptions('gHide');
	fnHideOptions('oHide');
	changeClassBack('iLink');
	changeClassBack('aLink');
	changeClassBack('gLink');
	changeClassBack('oLink');
}

function oActive() {
	fnHideOptions('insulated');
	fnHideOptions('access');
	fnHideOptions('environmental');
	fnHideOptions('group');
	fnHideOptions('iHide');
	fnHideOptions('aHide');
	fnHideOptions('eHide');
	fnHideOptions('gHide');
	changeClassBack('iLink');
	changeClassBack('aLink');
	changeClassBack('eLink');
	changeClassBack('gLink');
}


function changeClass(linkName) {
	document.getElementById(linkName).className = linkName+'Selected';
}
function changeClassBack(linkName) {
	document.getElementById(linkName).className = linkName;
}

function fnShowOverlay() {
	var dblOpacity = 0.7;
	var arrayPageSize = getPageSize();	
	var objOverlay = document.getElementById("overlay");
	objOverlay.style.backgroundColor = '#000000';
	objOverlay.style.width = arrayPageSize[0] + "px";
	objOverlay.style.height = arrayPageSize[1] + "px";
	objOverlay.style.display = "block";
	objOverlay.style.opacity = dblOpacity;
	objOverlay.style.filter = 'alpha(opacity=' + dblOpacity*100 + ')';	
}

//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.com
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = window.innerWidth + window.scrollMaxX;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	
	if (self.innerHeight) {	// all except Explorer
		if(document.documentElement.clientWidth){
			windowWidth = document.documentElement.clientWidth; 
		} else {
			windowWidth = self.innerWidth;
		}
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = xScroll;		
	} else {
		pageWidth = windowWidth;
	}
	//alert(pageWidth);	
	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}