function CheckForm(formName){
		var elem = document.contact_us.elements;
		//alert(elem.length)
		for(var i = 0; i < elem.length; i++)
		{	
			if(elem[i].name == 'firm' || elem[i].name == 'phone'){
				continue;
			}else if(elem[i].name == 'email'){
				if(elem[i].value ==''){
					alert("\t\t   Please enter " + elem[i].id + ".");
					elem[i].focus();
					return false;
				}
				if(validateEmail(elem[i].value)==false){
						alert('\t  Please enter a valid Email address.');
						elem[i].focus();
						return false;
				}
			
			}else if(elem[i].value == ''){
				alert("\t\t   Please enter " + elem[i].id + ".");
				elem[i].focus();
				return false;
			}
			
		}
	return true;

}
function validateEmail(email){
	var emailRegEx = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if(email.match(emailRegEx)){
		return true;
	}else{
		return false;
	}
}