function addMenuJS(){
//add JS functionality to left hand menu, if available
	a=document.getElementById('services');
	if(a){
		a.onclick=function(){return showServices();};
		a.href='#';
	}
}
function showServices(){
	//if the services are visible, hide them, otherwise show them
	//set menu element height to 800px to show background colour
	var menu=document.getElementById('menu')
	if(menu.offsetHeight<800){
		menu.style.height='800px';
	}
	var cLi=document.getElementsByTagName('li');
	var intMenuLength;
	for(i=0;i<cLi.length;i++){
		if(cLi[i].className=='service'){
			if(cLi[i].style.display=='none' || cLi[i].style.display==''){
				cLi[i].style.display='block';
			}else{
				cLi[i].style.display='none';
			}
		}
	}
}
//this is outside all functions
if(document.getElementById && document.createTextNode)
{
	window.onload=addMenuJS;
}

function openWindow(href,name,width,height,arguments){
	window.open(href,name,'height='+height+',width='+width+','+arguments);
}
function closeWindow(){
	window.close();
}

function validate(frm){
	//all-purpose form validation function
	//give form elements class="validate" to perform validation
	//could be enhanced to display label text instead of form name, perhaps?
	//would need to get reference to label first, then form
	//for the moment, name form elements as you would like them to be displayed, but with underscore, e.g. full_name
	//does this element need validating?
	for(i=0;i<frm.elements.length;i++){
		el=frm.elements[i];
		str=el.value;
		strDisplayName=el.name.replace('_',' ')
		aryV=el.className.split('_');
		if(aryV[0]=='validate'){
			//first, check presence
			if(str.length<1){
				alert('Please provide ' + strDisplayName);
					  //name.replace('_',' '));
				return false;
			}else{
				switch(aryV[1]){
					case 'number':
						//spaces, brackets,+ and  - are allowed
						re=/[\s()+-]/g;
						str=el.value.replace(re,'');
						re=/^\d+$/;
					break;
					case 'email':
						//nothing fancy, just checks for presence of @ and . with at least one character between each
						//1@2.3 is valid, for example
						re=/.+@.+\..+/gi;
					break;
					default:
						re='';
					break;
				}
				if(re!=''){
					if(str.search(re)==-1){
						alert('Please provide a valid ' + strDisplayName);
						return false;
					}	
				}
			}
		}	
	}
	return true;
}

function maskKeyPress(objEvent) 
{
    var iKeyCode;   
	if (objEvent.keyCode) { 
	iKeyCode = objEvent.keyCode; 
	} 
	else { 
	iKeyCode = objEvent.which; 
	}; 
    if((iKeyCode>=48 && iKeyCode<=57)||(iKeyCode==8)||(iKeyCode==46)) return true;
    return false;
}
function popup(url,winname,opt)
{
	var win = window.open(url,winname,opt);
	win.focus();
}

function frmSame(elem)
{
	var frm = document.regind;
	if(elem.checked)
	{
		frm.dtitle.selectedIndex=frm.title.selectedIndex;
		frm.dfirstname.value=frm.firstname.value;
		frm.dsurname.value=frm.surname.value;
		frm.daddress.value=frm.address.value;
		frm.dtown.value=frm.town.value;
		frm.dcity.value=frm.city.value;
		frm.dcounty.value=frm.county.value;
		frm.dpostcode.value=frm.postcode.value;
	}else{
		frm.dtitle.selectedIndex=0;
		frm.dfirstname.value='';
		frm.dsurname.value='';
		frm.daddress.value='';
		frm.dtown.value='';
		frm.dcity.value='';
		frm.dcounty.value='';
		frm.dpostcode.value='';
	}
}

function limit(objEvent,elem,maxchars,typ) 
{
	var iKeyCode;   
	if (objEvent.keyCode) { 
	iKeyCode = objEvent.keyCode; 
	} 
	else { 
	iKeyCode = objEvent.which; 
	};
    var strlen = elem.value.length;
	switch(typ) {
		case 'alphanum':
			if((strlen<maxchars && ((iKeyCode>=65 && iKeyCode<=90)||(iKeyCode>=97 && iKeyCode<=122)||(iKeyCode>=48 && iKeyCode<=57))||(iKeyCode==8)||(iKeyCode==46)||(iKeyCode>=37 && iKeyCode<=40))){return true;}	
			break;
		case 'num':
			if((strlen<maxchars && ((iKeyCode>=48 && iKeyCode<=57))||(iKeyCode==8)||(iKeyCode==46)||(iKeyCode>=37 && iKeyCode<=40))){return true;}
			break;
		case 'curr':
			//count decimal points
			//alert(elem.value);
			var char = '';
			var decCount = 0;
			for(i=0;i<strlen;i++)
			{
				char = elem.value.substring(i,i+1);
				//alert('char = ' + char);
				if(char=='.'){decCount++;}
			}
			//alert('decCount = ' + decCount);
			if((strlen<maxchars && ((iKeyCode>=48 && iKeyCode<=57))||(iKeyCode==8)||(iKeyCode==46)||(iKeyCode>=37 && iKeyCode<=40)))
			{
				if((decCount>0)&&(iKeyCode==46)){
					return false;
				}else{
					return true;
				}
			}
			break;
		case 'date':
			if((strlen<maxchars && ((iKeyCode>=47 && iKeyCode<=57)))||(iKeyCode==8)||(iKeyCode==46)||(iKeyCode>=37 && iKeyCode<=40)){return true;}
			break;
	}
	return false;
}

function charCount(elem,maxchars,updID)
{
	var fldlen = elem.value.length;
	if(fldlen>maxchars)
	{
		alert('The description field has a maximum of ' + maxchars + ' characters.');
		elem.value=elem.value.substring(0,maxchars);
		fldlen=maxchars;
	}
	eval('document.getElementById(\'' + updID + '\').innerHTML=fldlen;');
}
function fullimage(id)
{
	var win = window.open('/view-image/' + id + '.image','img' + id,'width=300,height=300,scrollbars=no');
	win.focus();
}
function jump(page,frm)
{
	eval('var theForm = document.' + frm + ';');
	theForm.page.value=page;
	theForm.submit();
}

function openImage()
{
	var imgcon = document.getElementById("LargeImage");
	var img = document.getElementById("LrgImg");
	imgcon.style.display='';
	//adjust shadow dimensions
	iw = img.width;
	ih = img.height;
	adjustShadow(img);
}
function closeImage()
{
	document.getElementById("LargeImage").style.display='none';
}
function adjustShadow(img)
{
	iw = img.width;
	ih = img.height;
	var shad = document.getElementById("shadow");
	shad.style.width = parseInt(iw) + 'px';
	shad.style.height = parseInt(ih) + 'px';
}

function switchTab(act,num,elem)
{
	for(i=1;i<num+1;i++)
	{
		if(i==act)
		{
			document.getElementById("page" + i).style.display='';
			document.getElementById("tab" + i).className='tab on';
			document.getElementById(elem).className='tab' + act;
		}else{
			document.getElementById("page" + i).style.display='none';
			document.getElementById("tab" + i).className='tab off';
		}
	}
}

function focTxt(elem,def)
{
	if(elem.value==def)
	{
		elem.value='';
	}
}
function blrTxt(elem,def)
{
	if(elem.value=='')
	{
		elem.value=def;
	}
}
function playVideo(home)
{
	document.getElementById('video').style.display='';
	if(home){document.getElementById('twitter').style.display='none';}
}
function stopVideo()
{
	//var swf = document.getElementById('videoswf');
   	//swf = null;
	document.getElementById('video').style.display='none';
	if(home){document.getElementById('twitter').style.display='';}
}