function validate()
{

	if (document.getElementById('name').value=="") 
	{ 
		alert("Please enter your name!");
		document.getElementById('name').focus();
		return false;
	}	
	else if (!checkemail(document.getElementById('email').value)) 
	{ 
		alert("Please enter a valid email adress!");
		document.getElementById('email').focus();
		return false;
	}
	else if (document.getElementById('requests').value=="") 
	{ 
		alert("Please enter your requests!");
		return false;
	}	
	else
	{
		return true;
	}
}

function validatelogin()
{

	if (document.getElementById('user').value=="") 
	{ 
		alert("Please enter username!");
		document.getElementById('user').focus();
		return false;
	}	
	else if (document.getElementById('pass').value=="") 
	{ 
		alert("Please enter password!");
		document.getElementById('pass').focus();
		return false;
	}	
	else
	{
		return true;
	}
}


function validatePractitioner()
{

	if (document.getElementById('name').value=="") 
	{ 
		alert("Please enter your Name and credential!");
		document.getElementById('name').focus();
		return false;
	}	
	else if (document.getElementById('clinic_name').value=="") 
	{ 
		alert("Please enter Clinic Name!");
		document.getElementById('clinic_name').focus();
		return false;
	}	
	else if (document.getElementById('address').value=="") 
	{ 
		alert("Please enter your Address!");
		document.getElementById('address').focus();
		return false;
	}	
	else if (document.getElementById('office_phone').value=="") 
	{ 
		alert("Please enter your Office Phone!");
		document.getElementById('office_phone').focus();
		return false;
	}	
	else if (!checkemail(document.getElementById('email').value)) 
	{ 
		alert("Please enter your Preferred Email Address!");
		document.getElementById('email').focus();
		return false;
	}
	else if (document.getElementById('password').value=="") 
	{ 
		alert("Please enter your Preferred 4 digit password!");
		document.getElementById('password').focus();
		return false;
	}
	else
	{
		return true;
	}
}


function checkemail(email){
	var str=email;
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
	if (filter.test(str))
		return true;
	else
	{
		return false;
	}
}
function dohideshow()
{
	if (document.getElementById('switch').value=="1") 
	{
		document.getElementById('preprovocationdata').style.display="block";
		document.getElementById('postprovocationdata').style.display="none";
	}
	else if (document.getElementById('switch').value=="2") 
	{
		document.getElementById('preprovocationdata').style.display="none";
		document.getElementById('postprovocationdata').style.display="block";
	}
}
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString())+
";path=/";
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1; 
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    } 
  }
return "";
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function create_roll_overs(){

    var images = document.getElementsByTagName('IMG');
	var preloads = new Object();

	for (var i = 0; i < images.length; i++){
		
		var ImageOffSrc = images[i].src + "";
		var ImageOnSrc = ImageOffSrc.replace(/_off/g, "_on");
		
		preloads['ImageOff_' + i] = new Image();
		preloads['ImageOff_' + i].src = ImageOffSrc;
		preloads['ImageOn_' + i] = new Image();
		preloads['ImageOn_' + i].src = ImageOnSrc;
		
		images[i].onmouseover = function(){this.src = this.src.replace(/_off/g, "_on");}
		images[i].onmouseout = function(){this.src = this.src.replace(/_on/g, "_off");}
		
	} 

}