/*
    Suckerfish dropdowns
*/
sfHover = function() {
	var sfEls = document.getElementById("mainnav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
	
}
if (window.attachEvent) window.attachEvent("onload", sfHover);


/*
    Change images on rollover
*/
function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document.images[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}


/*
    Empty form fields
*/
function clearText(objField){
	if (objField.defaultValue==objField.value)
	objField.value = ""
}

/*
    Preload images
*/
if (document.images) {
    
    abouton = new Image();
    abouton.src = "/images/nav_about_r.gif";
    aboutoff = new Image();
    aboutoff.src = "/images/nav_about.gif";
    
    direcon = new Image();
    direcon.src = "/images/nav_direc_r.gif";
    direcoff = new Image();
    direcoff.src = "/images/nav_direc.gif";
    
    adon = new Image();
    adon.src = "/images/nav_ad_r.gif";
    adoff = new Image();
    adoff.src = "/images/nav_ad.gif";
    
    testimon = new Image();
    testimon.src = "/images/nav_testim_r.gif";
    testimoff = new Image();
    testimoff.src = "/images/nav_testim.gif";
    
    correcton = new Image();
    correcton.src = "/images/nav_correct_r.gif";
    correctoff = new Image();
    correctoff.src = "/images/nav_correct.gif";
    
}

/*
    Written by Jonathan Snook, http://www.snook.ca/jonathan
    Add-ons by Robert Nyman, http://www.robertnyman.com
*/

function getElementsByClassName(oElm, strTagName, strClassName){
    var arrElements = (strTagName == "*" && document.all)? document.all : 
    oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    strClassName = strClassName.replace(/\-/g, "\\-");
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    var oElement;
    for(var i=0; i<arrElements.length; i++){
        oElement = arrElements[i];      
        if(oRegExp.test(oElement.className)){
            arrReturnElements.push(oElement);
        }   
    }
    return (arrReturnElements)
}



function validate(theForm)
	{
	var returnFlag = true;
	var frmLength;
	var firstBlank;
	var strEmailAddress;
	var strPhoneNumber;
	var strNewPhone = "";
	var strPhoneLength;
	var strMessage;
		
	var arrReqFields = getElementsByClassName(document.getElementById(theForm.id), "*", "required");
	
	strMessage = "Please complete all required fields."
	firstBlank = -1;
	
	// loop through fields to clear out default values
	frmLength = arrReqFields.length;
	
	for (i=0; i<frmLength;i++){ 
		if(arrReqFields[i].value == "")
		{
			
			arrReqFields[i].className = "required warning";
			returnFlag = false;
			if(firstBlank == -1) {
				firstBlank = i
			}
		}
		else if(arrReqFields[i].name == "email") {
			strEmailAddress = arrReqFields[i].value;
			intAtPosition = strEmailAddress.indexOf("@");
			intLastDotPosition = strEmailAddress.lastIndexOf(".");
			if((strEmailAddress=="") || (intAtPosition == 0) || (intAtPosition == 1) || (intLastDotPosition == -1) || (intAtPosition > intLastDotPosition) || (intLastDotPosition+1 == strEmailAddress.length)){
				arrReqFields[i].className = "required warning";
				returnFlag = false;
				if(firstBlank == -1) {
					firstBlank = i;
					strMessage = "Please enter a valid email address";
					
				}
			}
		}
		else if(arrReqFields[i].name.indexOf('phone') != -1 || arrReqFields[i].name.indexOf('fax') != -1) {
			// check to make sure phone numbers are 10 digits for phone and fax numbers
			strPhoneNumber = arrReqFields[i].value;
			strPhoneLength = strPhoneNumber.length;
			strNewPhone = "";
			
			if (strPhoneLength >= 10)
			{
				// strip out non-numeric characters
				for(var j=0;j<strPhoneLength;j++)
				{
					if(isDigit(strPhoneNumber.charAt(j)))
					{
						strNewPhone = strNewPhone + strPhoneNumber.charAt(j);
					}
				}
				if (strNewPhone.length != 10)
				{
					// phone number value invalid
					arrReqFields[i].className = "required warning";
					returnFlag = false;
					if(firstBlank == -1)
					{
						firstBlank = i;
						strMessage = "Please enter a valid phone number";
					}
				}
				else
				{
					arrReqFields[i].className = "required";
					arrReqFields[i].value = strNewPhone.substring(0,3) + "-" + strNewPhone.substring(3,6) + "-" + strNewPhone.substring(6,10);
				}
				
			}
			else
			{
				// phone number value too short
				arrReqFields[i].className = "required warning";
				returnFlag = false;
				if(firstBlank == -1) {
					firstBlank = i;
					strMessage = "Please enter a valid phone number";
					
				}
			}
		}
		else {
			arrReqFields[i].className = "required";
		}
	}
	
	// validate any required check boxes
	var arrReqChecks = getElementsByClassName(document.getElementById(theForm.id), "*", "reqcheck");
	var chkDone = false;
	
	frmLength = arrReqChecks.length;
	
	if(returnFlag == true && frmLength != 0)
	{ 
		returnFlag = false;
		
		for (i=0; i<frmLength;i++)
			{
				if(arrReqChecks[i].checked == false)
				{
					// checkbox is empty
				}
				else {
					chkDone = true;
					i = frmLength;
					returnFlag = true;
				}
			}
		
		if(returnFlag == false)
		{
			returnFlag = false;
			strMessage = "You must check at least one checkbox to continue.";
			firstBlank = 1;
		}
	}
		
	// check any other email addresses for errors
	var arrEmails = getElementsByClassName(document.getElementById(theForm.id), "*", "emailfield");
	
	frmLength = arrEmails.length;

	for (i=0; i<frmLength;i++)
		{
			strEmailAddress = arrEmails[i].value;
			if(strEmailAddress != "")
			{
				intAtPosition = strEmailAddress.indexOf("@");
				intLastDotPosition = strEmailAddress.lastIndexOf(".");
				if((strEmailAddress=="") || (intAtPosition == 0) || (intAtPosition == 1) || (intLastDotPosition == -1) || (intAtPosition > intLastDotPosition) || (intLastDotPosition+1 == strEmailAddress.length)){
					arrEmails[i].className = "emailfield warning";
					returnFlag = false;
					if(firstBlank == -1) {
						firstBlank = i;
						strMessage = "Please enter a valid email address.";
						
					}
				}
				else { arrEmails[i].className = "emailfield"; }
			}
			else { arrEmails[i].className = "emailfield"; }
		}
		
	// check any other phone fields for errors
	var arrPhones = getElementsByClassName(document.getElementById(theForm.id), "*", "phonefield");
	
	frmLength = arrPhones.length;

	for (i=0; i<frmLength;i++)
		{
			if(arrPhones[i].value != "")
			{
				// check to make sure phone numbers are 10 digits
				strPhoneNumber = arrPhones[i].value;
				strPhoneLength = strPhoneNumber.length;
				strNewPhone = "";
				
				if (strPhoneLength >= 10)
				{
					// strip out non-numeric characters
					for(var j=0;j<strPhoneLength;j++)
					{
						if(isDigit(strPhoneNumber.charAt(j)))
						{
							strNewPhone = strNewPhone + strPhoneNumber.charAt(j);
						}
					}
					if (strNewPhone.length != 10)
					{
						// phone number value invalid
						arrPhones[i].className = "phonefield warning";
						returnFlag = false;
						if(firstBlank == -1)
						{
							firstBlank = i;
							strMessage = "Please enter a valid phone number";
						}
					}
					else
					{
						arrPhones[i].className = "phonefield";
						arrPhones[i].value = strNewPhone.substring(0,3) + "-" + strNewPhone.substring(3,6) + "-" + strNewPhone.substring(6,10);
					}
					
				}
				else
				{
					// phone number value too short
					arrPhones[i].className = "phonefield warning";
					returnFlag = false;
					if(firstBlank == -1) {
						firstBlank = i;
						strMessage = "Please enter a valid phone number";
						
					}
				}
			}
		}


	
	if(document.getElementById('sigcheck'))
		{
			if(returnFlag == true)
			{
				if(document.getElementById('sigcheck').checked == false)
				{
					returnFlag = false;
					strMessage = "You must check the checkbox to continue.";
					firstBlank = 1;
				}
			}
		}
		
	if(returnFlag == false)
		{
			alert(strMessage);
			arrReqFields[firstBlank].focus()
		}
		
	return returnFlag;
	}




var state = 'none';

function showHide(theLink) {

	var theSection = theLink.parentNode
	
	var arrDropContent = getElementsByClassName(theSection, "div", "dropdowncontent");
	
	for (i=0; i<arrDropContent.length;i++){ 
		
		
		if (state == 'block') {
		state = 'none';
		}
		else {
		state = 'block';
		}


		hza = arrDropContent[i];
		var divStyle = hza.style.display;
		   if (divStyle == 'none') {
			  state = 'block';
		   }
		   else if (divStyle == '') {
			  state = 'block';
		   }
		   else {
			  state = 'none';
		   }
		hza.style.display = state;


	}	
}

// function to make certain field required when a checkbox is clicked
function makeReq(thecheck, thefield)
{
	if (thecheck.checked != false)
	{
		document.getElementById(thefield).className = "required";
	}
	else
	{
		document.getElementById(thefield).className = "normal";
	}
}

//-------------------------------------------------------------------
// isDigit(value)
//   Returns true if value is a 1-character digit
//-------------------------------------------------------------------
function isDigit(num) {
	if (num.length>1){return false;}
	var string="1234567890";
	if (string.indexOf(num)!=-1){return true;}
	return false;
	}