function chkNumeric(strString) {
		   var reg = /[0-9]/;
		   if (reg.test(strString) == true) {
			   return true;
			 }
				
			 else {
			 return false;
			 }
			 }
				function validation() {
					
									
					if(document.reg.name.value=="") {
						alert("Please, Enter Your Name");
						document.reg.name.focus();
						return false;
					}				
					
					
					if(document.reg.email.value=="") {
						alert("Please, Enter your mail id");
						document.reg.email.focus();
						return false;
					}		

	                  var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
                      var address = document.reg.email.value;
                      if(reg.test(address) == false) {
                     alert('Invalid Email Address');
                      return false;
                       }						
						if(document.reg.phone.value=="") {
						alert("Please, Enter Your Contact Number");
						document.reg.phone.focus();
						return false;
					    }
						if (chkNumeric(document.reg.phone.value) == false) {
     	              alert('Please enter your Phone Number In Numeric');
		              document.reg.phone.focus();
		              return false;
	                  }			
				   
					if(document.reg.comment.value=="") {
						alert("Please, Enter Your Comment");
						document.reg.comment.focus();
						return false;					
						}	
						if(document.reg.sum.value=="") {
						alert("Please, Enter The Result");
						document.reg.sum.focus();
						return false;
					}		

	                  var reg = /^(22)$/;
                      var address = document.reg.sum.value;
                      if(reg.test(address) == false) {
                     alert('Wrong!!');
                      return false;
                       }	
					
					
					}