// JavaScript Document

 
function reservation_form(form1)
{
	if(document.form1.name.value == "")
	{
		alert("Please enter your 'Name'")
		document.form1.name.focus();
		return(false)
	}
	if(document.form1.city.value == "")
	{
		alert("Please enter your 'City'")
		document.form1.city.focus();
		return(false)
	}	
	if(document.form1.contact.value == "")
	{
		alert("Please enter your 'Contact No'")
		document.form1.contact.focus();
		return(false)
	}	
	if(document.form1.mobile.value == "")
	{
		alert("Please enter your 'Mobile No'")
		document.form1.mobile.focus();
		return(false)
	}	
	if(!checkmailid(document.form1.email.value))
	{	
	alert("Please enter a valid 'email id'");
	document.form1.email.select();
	document.form1.email.focus(); 
	return(false)
	}
	if(document.form1.type.value=="0")
	{
		alert("Please mention your '-- Please select your Type -- '")
		document.form1.type.focus();
		return(false)
	}
	if(document.form1.type.value=="1")
	{
		if(document.form1.room1.value=="")
	{
		alert("Please mention your '-- Please select a room -- '")
		document.form1.room1.focus();
		return(false)
	}
	}
	if(document.form1.type.value=="2")
	{
		if(document.form1.room2.value=="")
	{
		alert("Please mention your '-- Please select a room -- '")
		document.form1.room2.focus();
		return(false)
	}
	}
}


function checkmailid(mailid)
{
       if (mailid!="" )
         {   
            var b = mailid;
			var c = b.length;				//  to find thelength of the email id
 			var d = b.indexOf("@");         //  to check for the occurance of "@"
 			var e = b.indexOf("@",d+1); 	//  to confirm "@" occurs only once
			var f = b.indexOf(".");			//  to check for the occurance of "."
 			var g = b.lastIndexOf(".");		//  to Check for the last occurance of "." in the string 					
			var h = b.indexOf(".",d+1);		//  to Check for the last occurance of "." in the string after "@"
			var i = b.indexOf(",");			//  To check for the Occurance Of "," in the string
			var j = b.indexOf(" ");       	//  to check for the occurance of tho sace
                                             //**small modification in below line to avoid the successive occurance of the "." using h==g-1

			if(d==-1 || g==c-1 || d==0 || f==0 || h==d+1 ||  h==c-1 || d==c-1 || e!=-1 || h==-1 ||  i!=-1 || j!=-1 || h==g-1)
  				{ 
   					return(false);
   				}
			else
			{
			return(true);
			}
   			}
 }
 
 function change(){
	 if(document.form1.type.selectedIndex=="0") 
	 {
		 document.getElementById("div1").style.display = "none";
		 document.getElementById("div2").style.display = "none";
		 document.getElementById("div3").style.display = "none";
	 }
	 if(document.form1.type.selectedIndex=="1") 
	 {
		 document.getElementById("div1").style.display = "block";
		 document.getElementById("div2").style.display = "none";
		 document.getElementById("div3").style.display = "none";
	 }
	 if(document.form1.type.selectedIndex=="2") 
	 {
		 document.getElementById("div1").style.display = "none";
		 document.getElementById("div2").style.display = "block";
		 document.getElementById("div3").style.display = "none";
	 }
	 if(document.form1.type.selectedIndex=="3") 
	 {
		 document.getElementById("div1").style.display = "none";
		 document.getElementById("div2").style.display = "none";
		 document.getElementById("div3").style.display = "block";
	 }
 }
 function numbersonly(myfield, e, dec)
{
var key;
var keychar;

if (window.event)
   key = window.event.keyCode;
else if (e)
   key = e.which;
else
   return true;
keychar = String.fromCharCode(key);
if (myfield.value.length > 11)
    return false;
// control keys
if ((key==null) || (key==0) || (key==8) || 
    (key==9) || (key==13) || (key==27) )
   return true;

// numbers
else if ((("0123456789+.-").indexOf(keychar) > -1))
   return true;

// decimal point jump
else if (dec && (keychar == "."))
   {
   myfield.form.elements[dec].focus();
   return false;
   }
else
    return false;

}

function isAlphaKey(cntl,e) {
    var key
    var keychar;
   
    if (window.event)
        key = window.event.keyCode;
    else if (e)
        key = e.which;
    else
        return true;
    if (cntl.value.length > 40)
        return false;
    keychar = String.fromCharCode(key);
    // control keys
    if ((key == null) || (key == 0) || (key == 8) ||
    (key == 9) || (key == 13) || (key == 27))
        return true;

    if ((("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz ").indexOf(keychar) > -1))
        return true;
        else
    return false;
    }

    function islength(cntl) {

        if (cntl.value.length < 13) {
            return true
        }
        else {
            alert(cntl.value.length);
            return false;
        }
           
    }