function valid_email(sValue)
		{
			
					var sec=sValue.indexOf("@")
					
							var s=""
							invalidChars = "' /:,;"
							for (i = 0; i< invalidChars.length; i++)
							{
								badChar = invalidChars.charAt(i)
								if (sValue.indexOf(badChar,0) != -1)
								{
									alert("You can't use following characters " + invalidChars +" in your Email address.")
									return false;
								}
							}
							atPos = sValue.indexOf("@",1)
							if (atPos == -1)
							{
								alert("The Email address you have provided does not have @ symbol. Please enter valid Email address.")
								return false;
							}
							if (sValue.indexOf("@",atPos+1) != -1)
							{
									alert("The Email address you have provided have two @ symbols. Please enter valid Email address.")
								return false;
							}
						
							attheRatePos=sValue.lastIndexOf("@")
							periodPos = sValue.lastIndexOf(".")
							if ( (attheRatePos+1 == periodPos) || (attheRatePos+2  == periodPos) )
							{
								alert("The Email address you have Provided does not have info@ab.com  Please provide a valid Email address");
								return false;
							}
							if (periodPos == -1)
							{
								alert("The Email address you have provided does not have .com or .net etc. Please provide a valid Email address.")
								return false;
							}
							if (! ( (periodPos+3 == sValue.length) || (periodPos+4  == sValue.length) ))
							{
								alert("The Email address you have provided does not have .com or .net etc. Please provide a valid Email address.")
								return false;
							}
							return true;
		}