//	already have: script language=javascript
//	Global Javascript stuff

///////
//////////////////////////////////////////////////////////////////////////////////

window.defaultStatus="Metropolitan Sleep Disorders Center";

//////////////////////////////////////////////////////////////////////////////////
///////
	
//The global variable vCurrentActiveLayer holds the index of the highlighted
//layer, or zero if none are highlighted

var vCurrentActiveLayer = 0;


//Another global variable to determine browser type. This is needed when showing
//and hiding layers
if(navigator.appName.indexOf("Netscape") == -1)
{
	vCurrentBrowserType="Explorer"
}
else
{
	vCurrentBrowserType="Netscape"
}


function changeImages() 
{

	document[changeImages.arguments[0]].src = eval(changeImages.arguments[1] + ".src");
}

function newImage(arg) 
{
	if (document.images) 
	{
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

///////	Global Rollovers:


	imgMainNav_1_ON  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_1_x.gif"); 
	imgMainNav_1_OFF  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_1_u.gif"); 

	imgMainNav_2_ON  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_2_x.gif"); 
	imgMainNav_2_OFF  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_2_u.gif"); 

	imgMainNav_3_ON  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_3_x.gif"); 
	imgMainNav_3_OFF  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_3_u.gif"); 

	imgMainNav_4_ON  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_4_x.gif"); 
	imgMainNav_4_OFF  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_4_u.gif"); 

	imgMainNav_5_ON  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_5_x.gif"); 
	imgMainNav_5_OFF  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_5_u.gif"); 

	imgMainNav_6_ON  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_6_x.gif"); 
	imgMainNav_6_OFF  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_6_u.gif"); 

	imgMainNav_7_ON  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_7_x.gif"); 
	imgMainNav_7_OFF  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_7_u.gif"); 

	imgMainNav_8_ON  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_8_x.gif"); 
	imgMainNav_8_OFF  = newImage(vjPathToRoot + "Images/NavImages/imgMainNav_8_u.gif"); 

	imgLogoNav_1_ON  = newImage(vjPathToRoot + "Images/LogoNavImages/imgLogoNav_1_x.gif"); 
	imgLogoNav_1_OFF  = newImage(vjPathToRoot + "Images/LogoNavImages/imgLogoNav_1_u.gif"); 



imgTakeQuiz_btn_ON		= newImage(vjPathToRoot + "Images/Rotates/btnTakeQuiz_x.gif"); 
imgTakeQuiz_btn_OFF	= newImage(vjPathToRoot + "Images/Rotates/btnTakeQuiz_u.gif"); 


imgViewResults_btn_ON	= newImage(vjPathToRoot + "Images/Rotates/btnGetResults_x.gif"); 
imgViewResults_btn_OFF	= newImage(vjPathToRoot + "Images/Rotates/btnGetResults_u.gif"); 

imgMoreInfo_btn_ON		= newImage(vjPathToRoot + "Images/MoreInfo/btnMoreInfo_x.gif"); 
imgMoreInfo_btn_OFF	= newImage(vjPathToRoot + "Images/MoreInfo/btnMoreInfo_u.gif"); 

imgMoreInfo_small_btn_ON		= newImage(vjPathToRoot + "Images/MoreInfo/btnMoreInfo_small_x.gif"); 
imgMoreInfo_small_btn_OFF	= newImage(vjPathToRoot + "Images/MoreInfo/btnMoreInfo_small_u.gif"); 




//	Utility Functions:

	
	function isValidEmailAddress(str)
	{
		// check if gEmail has _@_._ format
		var i = str.indexOf('@');
		var j = str.lastIndexOf('.');
		//	alert(i + " " + j)
		if (j > i && ((j != -1) && (i != -1)))
		{
			return true;
		}
		else
		{
			return false;
		}
	}
function openAndCenterWindow(urlToOpenInNewWindow,w,h)
{

	var vjNeedToOpenNewWindow=1;  //default: open new window
	
	// Does the window exist, or has it previously been opened?
	if(window.vjPopupWindow)
	{
		// Having once been opened, is it now closed?
		if(vjPopupWindow.closed)
		{
			vjNeedToOpenNewWindow=1   // closed, so open again
		}
		else
		{
			vjNeedToOpenNewWindow=0   // still open so set focus instead of open again
		}
	}
	
	else
	{
		vjNeedToOpenNewWindow=1   // never opened, so open new
	}
	
	
	if(vjNeedToOpenNewWindow == 0)
	{
		vjPopupWindow.focus()
	}
	else
	{

	var myScreenWidth = screen.width;
	var myScreenHeight= screen.height;
	
	var puWindowWidth	= (6*myScreenWidth)/8;
	var puWindowHeight	= (8*myScreenHeight)/10;

	var puLeft	= myScreenWidth/8;
	var puTop	= myScreenHeight/10;
		
	vjPopupWindow = window.open(urlToOpenInNewWindow,"myPopUpWindow", "width=" + puWindowWidth + ",height=" + puWindowHeight + " screenX=" + puLeft + ",left=" + puLeft	+ ",screenY=" + puTop + ",top=" + puTop + ",scrollbars=No,resizable=Yes")
	
	}
}


	
function openAndCenterWindow_WithToolbars(urlToOpenInNewWindow,w,h)
{

	var vjNeedToOpenNewWindow=1;  //default: open new window
	
	// Does the window exist, or has it previously been opened?
	if(window.vjPopupWindow)
	{
		// Having once been opened, is it now closed?
		if(vjPopupWindow.closed)
		{
			vjNeedToOpenNewWindow=1   // closed, so open again
		}
		else
		{
			vjNeedToOpenNewWindow=0   // still open so set focus instead of open again
		}
	}
	
	else
	{
		vjNeedToOpenNewWindow=1   // never opened, so open new
	}
	
	
	if(vjNeedToOpenNewWindow == 0)
	{
		vjPopupWindow.focus()
	}
	else
	{

	var myScreenWidth = screen.width;
	var myScreenHeight= screen.height;
	
	var puWindowWidth	= (6*myScreenWidth)/8;
	var puWindowHeight	= (8*myScreenHeight)/10;

	var puLeft	= myScreenWidth/8;
	var puTop	= myScreenHeight/10;
		
	vjPopupWindow = window.open(urlToOpenInNewWindow,"myPopUpWindow", "width=" + puWindowWidth + ",height=" + puWindowHeight + " screenX=" + puLeft + ",left=" + puLeft	+ ",screenY=" + puTop + ",top=" + puTop + ",scrollbars=No,menubar=Yes,resizable=Yes")
	
	}
}

	
function openAndCenterWindow_Portfolio(urlToOpenInNewWindow,w,h)
{

	var vjNeedToOpenNewWindow=1;  //default: open new window
	
	// Does the window exist, or has it previously been opened?
	if(window.vjPopupWindow)
	{
		// Having once been opened, is it now closed?
		if(vjPopupWindow.closed)
		{
			vjNeedToOpenNewWindow=1   // closed, so open again
		}
		else
		{
			vjNeedToOpenNewWindow=0   // still open so set focus instead of open again
		}
	}
	
	else
	{
		vjNeedToOpenNewWindow=1   // never opened, so open new
	}
	
	
	if(vjNeedToOpenNewWindow == 0)
	{
		vjPopupWindow.focus()
	}
	else
	{

	var myScreenWidth = screen.width;
	var myScreenHeight= screen.height;
	
	var puWindowWidth	= (1*myScreenWidth)/4;
	var puWindowHeight	= (1*myScreenHeight)/4;

	var puLeft	= myScreenWidth/4;
	var puTop	= myScreenHeight/4;
		
	vjPopupWindow = window.open(urlToOpenInNewWindow,"myPopUpWindow", "width=" + puWindowWidth + ",height=" + puWindowHeight + " screenX=" + puLeft + ",left=" + puLeft	+ ",screenY=" + puTop + ",top=" + puTop + ",scrollbars=No,menubar=Yes,resizable=Yes")
	
	}
}

///////////////////////////////////////////////////////////////////////
/////////////////////  Nav Utilities   ////////////////////////
///////////////////////////////////////////////////////////////////////

function toggleMainNav(vjNavIndex,vjOnOrOff)
{
	if(vjOnOrOff == 1)
	{
		
		turnAllSubNavOff();

		
		changeImages("imgMainNav_" + vjNavIndex,"imgMainNav_" + vjNavIndex + "_ON");

		if(vjNavIndex==1 || vjNavIndex==2 || vjNavIndex==4  || vjNavIndex==6)
		{
			toggleSubNav(vjNavIndex);
		}
	}
	else
	{
		if(vjNavIndex==3 || vjNavIndex==5 || vjNavIndex==7 || vjNavIndex==8 )
		{
			changeImages("imgMainNav_" + vjNavIndex,"imgMainNav_" + vjNavIndex + "_OFF");
		}
	}
	
}




///////////////////////////////////////////////////////////////////////
/////////////////////  Sub Nav Utilities   ////////////////////////
///////////////////////////////////////////////////////////////////////

//turns on the selected NAV and SubNav
function turnOnSubNav(navIndex)
{
	curNav = "layerSubNav" + navIndex;

	if(document.getElementById)
          document.getElementById(curNav).style.visibility="visible"
	else if(document.layers)
		document.layers[curNav].visibility="show"
	else if(document.all)
		document.all(curNav).style.visibility="visible"
}

//turns off the selected NAV and SubNav
function turnOffSubNav(navIndex)
{
	curNav = "layerSubNav" + navIndex;

	if(document.getElementById)
		document.getElementById(curNav).style.visibility='hidden'
	else if(document.layers)
		document.layers[curNav].visibility='hide' 
	else if(document.all)
		document.all(curNav).style.visibility='hidden'
}

//switches highlighted layer. T
function toggleSubNav(navIndex)
{
	x=vCurrentActiveLayer;

	if(x > 0)
	{
		turnOffSubNav(x);
	}

	turnOnSubNav(navIndex);
	vCurrentActiveLayer = navIndex;
}

function turnAllSubNavOff()
{
	x=vCurrentActiveLayer;

	if(x > 0)
	{
		turnOffSubNav(x);
	}

	vCurrentActiveLayer = 0;

	
		changeImages("imgMainNav_1","imgMainNav_1_OFF");
	
		changeImages("imgMainNav_2","imgMainNav_2_OFF");
	
		changeImages("imgMainNav_3","imgMainNav_3_OFF");
	
		changeImages("imgMainNav_4","imgMainNav_4_OFF");
	
		changeImages("imgMainNav_5","imgMainNav_5_OFF");
	
		changeImages("imgMainNav_6","imgMainNav_6_OFF");
	
		changeImages("imgMainNav_7","imgMainNav_7_OFF");
	
		changeImages("imgMainNav_8","imgMainNav_8_OFF");
	
		

	if(vjPrimaryNavLevel > 0)
	{
		changeImages("imgMainNav_" + vjPrimaryNavLevel,"imgMainNav_" + vjPrimaryNavLevel + "_ON");
	}
		
}

	//already have: </script>