//VALIDATION FOR FORM

function Data(name,email,taj,contact,in_dd,in_mm,in_yy,out_dd,out_mm,out_yy,pax,query)
{
	var name,email,taj,contact,in_dd,in_mm,in_yy,out_dd,out_mm,out_yy,pax,query;
	
	name=booking.name.value;
	email=booking.email.value;
        taj=booking.taj.value;
        contact=booking.contact.value;
	in_dd=booking.in_dd.value;
	in_mm=booking.in_mm.value;
	in_yy=booking.in_yy.value;
	out_dd=booking.out_dd.value;
	out_mm=booking.out_mm.value;
	out_yy=booking.out_yy.value;
	pax=booking.pax.value;
	query=booking.query.value;

	if(nullValue(name)==0||nullValue(email)==0 || nullValue(taj)==0 ||nullValue(contact)==0 ||nullValue(in_dd)==0 || nullValue(in_mm)==0|| nullValue(in_yy)==0 || nullValue(out_dd)==0||nullValue(out_mm)==0 ||nullValue(out_yy)==0 ||nullValue(pax)==0 ||nullValue(query)==0)
	{
		//FNAME - UID - EMAIL -----CAN'T BE BLANK
		alert("You Have Left Any Of The COMPULSORY Field Blank!");
		return false;
	}

	if(checkOnlyAlpha(name)==1)
	{
		alert("Invalid Characters Found In Name Field!");
		document.forms[0].name.focus();
		return false;
	}
	if(checkEmail(email)==0)
	{
		alert("Invalid E-Mail Address");
		document.forms[0].email.focus();
		return false;
	}

}

//-------------CHECKING ANY NULL VALUE

function nullValue(num)
	{var str;
	str=num;
		if(str == 0)
		{
			return 0; 
		}
		else
		{
			return 1;
		}

	}
//-----------CHECKING FOR ONLY ALPHAETS

function checkOnlyAlpha(char)
{
	var v=char;
	var i;
	i=v.length;
	var ctr,temp,dump;
	for(ctr=0;ctr<=i;ctr++)
	{
		dump=v.charAt(ctr);
		temp=dump.charCodeAt(0);//Returns the Unicode encoding of the specified character.
					//stringObj.charCodeAt(index).(stringObj)A String object or literal. 
					//(index )The zero-based index of the specified character.  
	
		if(temp<'65'||temp>'90')
		{
			if(temp<'97'||temp>'122')
			{
				return 0;
			}
		}
	}
}


//-------------------CHECKING FOR ANY INVALID CAHRACTER VALUE IN THE eMAIL

function checkEmail(char)
{
	var val=char;
	var len=val.length;
	var ctr,temp,cat,dot=0,goForApproval=0,haveJunk=0;
	var atTheRate=0;
	for(ctr=0;ctr<len;ctr++)
	{
		temp=val.charAt(ctr);
		cat=temp.charCodeAt(0);
		if(cat<'65'||cat>'90')
		{
			if(cat<'97'||cat>'122')
			{
				if(cat<'48'||cat>'57')
				{			
					if(cat=='64')	//@ has ASCII value of 64
					{
						atTheRate+=1;
						goForApproval=1;
						haveJunk=0;
					}
					else
					if(cat=='46')	//. has ASCII value of 46
					{
						dot+=1;
						goForApproval=1;
						haveJunk=0;
					}
					else
					if(cat=='95')	//_ has ASCII value of 95
					{
						goForApproval=1;
						haveJunk=0;
					}
					else
					{haveJunk=1;break;}			
				}
			}	
		}
	}
	if(goForApproval==1 && haveJunk==0)
	{
		if(atTheRate==1 && dot==1)
		{
			return 1;
		}
		else
		{
			return 0;
		}
	}
	else
	if(goForApproval==0 || haveJunk==1)	
	{
		return 0;
	}

}


//------------------------------CHECKING FOR INVALID USER-ID.