function validation()
{ 

	 if(document.getElementById("f_name").value=="")
	{
		alert("Enter the Fullname");
		document.getElementById("f_name").focus();
		return false;
	}
	else if(document.getElementById("email").value=="")
									{
										alert("Enter the email");
										document.getElementById("email").focus();
										return false;
									}
									else if(document.getElementById("phone").value=="")
									{
										alert("Enter the phone");
										document.getElementById("phone").focus();
										return false;
									}
									else if(document.getElementById("cell_no").value=="")
									{
										alert("Enter the mobileno");
										document.getElementById("cell_no").focus();
										return false;
									}
									else if(document.getElementById("country").value=="")
									{
										alert("Select country");
										document.getElementById("country").focus();
										return false;
									}
									else if(document.getElementById("hotel_cat").value=="")
									{
										alert("Select type of room");
										document.getElementById("hotel_cat").focus();
										return false;
									}
									else if(document.getElementById("no_of_pa").value=="")
									{
										alert("Select No Of Adult");
										document.getElementById("no_of_pa").focus();
										return false;
									}
									else if(document.getElementById("noofchild").value=="")
									{
										alert("Select No Of children");
										document.getElementById("noofchild").focus();
										return false;
									}
									else if(document.getElementById("single").value=="")
									{
										alert("Select No Of Single Room");
										document.getElementById("single").focus();
										return false;
									}
									else if(document.getElementById("double").value=="")
									{
										alert("Select No Of double Room");
										document.getElementById("double").focus();
										return false;
									}
									else if(document.getElementById("triple").value=="")
									{
										alert("Select No Of triple Room");
										document.getElementById("triple").focus();
										return false;
									}
									else if(document.getElementById("date1").value=="")
									{
										alert("Select check in  Date");
										document.getElementById("date1").focus();
										return false;
									}
									else if(document.getElementById("month1").value=="")
									{
										alert("Select check in  Month");
										document.getElementById("month1").focus();
										return false;
									}
									else if(document.getElementById("year1").value=="")
									{
										alert("Select check in Year");
										document.getElementById("year1").focus();
										return false;
									}
									else if(document.getElementById("date").value=="")
									{
										alert("Select check out Date");
										document.getElementById("date").focus();
										return false;
									}
									else if(document.getElementById("month").value=="")
									{
										alert("Select check out Month");
										document.getElementById("month").focus();
										return false;
									}
									else if(document.getElementById("year").value=="")
									{
										alert("Select check out Year");
										document.getElementById("year").focus();
										return false;
									}
									
									
									else if(document.getElementById("comments").value=="")
									{
										alert("Enter the comment");
										document.getElementById("comments").focus();
										return false;
									}
									else
									{
										var emailRegEx =       /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
             var  str = document.getElementById('email').value;
              if(!str.match(emailRegEx))
	    	{
              alert('Please enter a valid email address.');      
			  document.getElementById("email").select();
  		      return false;
            }	
			else if(document.getElementById("cell_no").value!=="")
			{
             var str=document.getElementById("cell_no").value;             if(str.length<10)
			 {
				 alert("Mobile no should be min 10 nos");
				 document.getElementById("cell_no").focus();
				 return false;
			 }
			}
			
			
			else
			{
				
				document.form1.submit();
			}
									
		                          }
									
}