function trim(myString){
 
   return myString.replace( /^\s+/g,'').replace(/\s+$/g,'');
   
}
function isEmail(str)
{
	var regex = /^[-_.a-z0-9]+@(([-_a-z0-9]+\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i;
	return regex.test(str);
}
  function check_empty_bottom()
  {
	
     var message="";
	 var error=0; 	
 	 x = document.contactus;
  
  str = trim(x.fname.value); 
  if(str == "")
	 {	
	     if(error==0)
		 x.fname.focus();
	  	 error=1;
	 	 message=message + "* Please enter first name.\n";
	 }
	
	str = trim(x.lname.value); 
  if(str == "")
	 {	
	     if(error==0)
		 x.lname.focus();
	  	 error=1;
	 	 message=message + "* Please enter last name.\n";
	 }
	 
	str = trim(x.address.value);  
  if(str == "")
	 {	
	     if(error==0)
		 x.address.focus();
	  	 error=1;
	 	 message=message + "* Please enter address.\n";
	 }	 
	str = trim(x.postcode.value);  
  if(str == "")
	 {	
	     if(error==0)
		 x.postcode.focus();
	  	 error=1;
	 	 message=message + "* Please enter Post Code.\n";
	 }
	 
    if(!isEmail(trim(x.email.value)))
	{
		if(error==0)
	   x.email.focus();	
	   error=1;
	   message=message+"* Please enter Valid Email Id.\n";
	}
	
	str = trim(x.telnum.value); 
  if(str == "")
	 {	
	     if(error==0)
		 x.telnum.focus();
	  	 error=1;
	 	 message=message + "* Please enter Telephone Number.\n";
	 }
	 
	 str = trim(x.interested.value); 
  if(str == "0")
	 {	
	     if(error==0)
		 x.interested.focus();
	  	 error=1;
	 	 message=message + "* Please enter interested.\n";
	 }
	 
	 str = trim(x.heardame.value); 
  if(str == "0")
	 {	
	     if(error==0)
		 x.heardame.focus();
	  	 error=1;
	 	 message=message + "* Please enter heard about you from.\n";
	 }
	 
	str = trim(x.comments.value); 
  if(str == "0")
	 {	
	     if(error==0)
		 x.comments.focus();
	  	 error=1;
	 	 message=message + "* Please enter Comments.\n";
	 }
	 
	 
	if(error==1)
       {
 	     alert(message);
	     return false;
       }
     return true;
	
  }