function validate_Exhibitor_form(){
	if(document.getElementById('ExhibitorName').value == '')
	{
		alert("Please enter Name.");
		document.getElementById('ExhibitorName').focus();
		return false;
	}
	var st = email(document.getElementById('ExhibitorEmail').value);
	if(!st) 
	{ 
		alert('Either email field is empty or this is not a valid email address.');  
		document.getElementById('ExhibitorEmail').focus();
		return false;	
	}
	else if(document.getElementById('ExhibitorAddress').value == '')
	{
		alert("Please enter Address.");
		document.getElementById('ExhibitorAddress').focus();
		return false;
	}
	else if(document.getElementById('ExhibitorPhone').value == 0)
	{
		alert("Please enter Phone.");
		document.getElementById('ExhibitorPhone').focus();
		return false;
	}
	  	  	  	  	  	  	  	  	  	  	  	  	  	  	  	  		
	return true;
}