// JavaScript Document
function valid_mail(){
	
	if(document.getElementById("email").value!=""){
		var email=document.getElementById("email").value.toLowerCase();
		var length=document.getElementById("email").value.length;
		at_pos=0;
		var symbol=email.indexOf("@",0);
		var addr=email.indexOf(".",0);
		length=length-1;
		var check=email.indexOf(".",length);
		if (addr!=-1){
			length_dot=addr;
			--length_dot;
			var at_pos=email.indexOf("@",length_dot);
		}
		
		if ((symbol==-1)||(addr==-1)|| (check !=-1) || at_pos!=-1)
		{
			alert("Please Enter a right email address");
			document.getElementById("email").focus();
			document.getElementById("email").select();
			return false;
		}
		
		
	}//if
	else
	{
	alert("Please Enter your email address");
	document.getElementById("email").focus();
	return false;
	}
	}//fn

function isEmpty(s)
{
  var i;
     if((s==null) || (s.length==0))
     return true;
        for(i=0;i<s.length;i++)
          {
            var c=s.charAt(i);
            if(whitespace.indexOf(c)==-1)
            return false;
          }
     return true;
}

function search_type_status(){
	var selected_value=document.getElementById("type").value;
	if(selected_value =="doctor"){
		document.getElementById('specialty_id').disabled=false;
		document.getElementById('sub_specialty_id').disabled=false;
	}else if(selected_value=="hospital"){
		document.getElementById('specialty_id').disabled=false;
		document.getElementById('sub_specialty_id').disabled=true;
	}else {
		document.getElementById('specialty_id').disabled=true;
		document.getElementById('sub_specialty_id').disabled=true;
	}
}


function list_trainer_type_change(){
	var selected_value=document.getElementById("trainer_type").value;
	if(selected_value ==1){
		document.getElementById('trainer_list').style.display = 'block';
		document.getElementById('new_trainer').style.display = 'none';
		//document.getElementById('addresses_list').value=document.getElementById('addresses_list')[0].value;
	}else{
		
		document.getElementById('trainer_list').style.display = 'none';
		document.getElementById('new_trainer').style.display = 'block';
	}

}
function list_address_change(){
	var selected_value=document.getElementById("addresses_list").value;
	if(selected_value ==-1){
		//document.getElementById('add_address').style.display = 'block';
		location.href = "add_address.php"
		document.getElementById('addresses_list').value=document.getElementById('addresses_list')[0].value;
	}
		if(selected_value !=-1 && selected_value !=0){
			sR('get_address.php?address_id='+selected_value+ '', '', '','address_details');
	}

}


function validate_order(){
	if(document.getElementById("addresses_list").value ==0){
		alert("Choose an address");
		return false;
	}
	if(document.getElementById("items_number").value < 1){
		alert("add items in your cart first");
		return false;
		
	}
	return true;
}

function check_quantity(quantity,field){
	if(isNaN(quantity) || quantity <= 0){
		alert("invalid quantity");
		document.getElementById(field).value=1;
		return false;
	}
	return true;
}