function validate()
 {
 
	 if(document.getElementById("ccomments").value=="")
	 {
	 	alert("Enter the Comments");
		document.getElementById("ccomments").focus();
		return false;
		
	 }
	 if(document.getElementById("cfirstName").value=="")
	 {
	 	alert("Enter the First name");
		document.getElementById("cfirstName").focus();
		return false;
		
	 }
	 	 if(document.getElementById("txtemail").value=="")
	 {
	 	alert("Enter the Email");
		document.getElementById("txtemail").focus();
		return false;
		
	 }
	 	
	 
 var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
		    var address = document.forms[form_id].elements[email].value;
		    if(reg.test(address) == false) 
		    {
			 alert('Invalid Email Address');
			 return false;
		    }
		
 }