FORM VALIDATION AND EMAIL JS VALIDATION

FORM VALIDATION AND EMAIL JS VALIDATION

<br /><script language="JavaScript">
<br />
<br />function validate()
<br />{
<br />
<br />  var firstname=document.form1.firstname.value;
<br />  if(firstname==""){   
<br />  alert("Please enter the your First Name");document.form1.firstname.focus();return false;  
<br />  }
<br />  
<br />  var lastname=document.form1.lastname.value;
<br />  if(lastname==""){   
<br />  alert("Please enter the your Last Name");document.form1.lastname.focus();return false;  
<br />  }
<br />  
<br />  var street_address=document.form1.street_address.value;
<br />  if(street_address==""){   
<br />  alert("Please enter the your Address");document.form1.street_address.focus();return false;  
<br />  }
<br />  
<br />  var city=document.form1.city.value;
<br />  if(city==""){   
<br />  alert("Please enter the your City or Town");document.form1.city.focus();return false;  
<br />  }
<br />  
<br />  
<br />  var country=document.form1.country.value;
<br />  if(country==""){   
<br />  alert("Please enter the your Country");document.form1.country.focus();return false;  
<br />  }
<br />  
<br />  var postcode=document.form1.postcode.value;
<br />  if(postcode==""){   
<br />  alert("Please enter the your Postcode");document.form1.postcode.focus();return false;  
<br />  }
<br />  
<br />  var telephone=document.form1.telephone.value;
<br />  if(telephone==""){   
<br />  alert("Please enter the your Telephone No");document.form1.telephone.focus();return false;  
<br />  }
<br />
<br />var username=document.form1.username.value;
<br />if(username=="0" || username=="" || username=="Enter your Emailid as your username")
<br />{
<br />alert("Please enter Your Email address");
<br />document.form1.username.focus();
<br />return false;
<br />}
<br />
<br />if(valemail(username,"Please enter valid Email ID!") == false)
<br />{
<br />document.form1.username.select();
<br />return false;
<br />}
<br />
<br />  
<br />  var password=document.form1.password.value;
<br />  if(password==""){   
<br />  alert("Please enter the your password");document.form1.password.focus();return false;  
<br />  }
<br />  
<br />  var confirmation=document.form1.confirmation.value;
<br />  if(confirmation!=password){   
<br />  alert("Your confirmation password is not match with your password");document.form1.confirmation.focus();return false;  
<br />  }
<br />  
<br />  var number=document.form1.number.value;
<br />if(number=="0" || number=="" )
<br />{   
<br />alert("Please enter the Security Code");document.form1.number.focus();return false;  
<br />}
<br />
<br />return true;
<br />}
<br />
<br />function valemail(field,alerttxt)
<br />{
<br />  with (field)
<br />  {
<br />   var atpos = field.indexOf("@")
<br />   var dotpos = field.lastIndexOf(".")
<br />   var lastpos = field.length - 1
<br />    if (atpos < 2 || dotpos - atpos < 2 || lastpos-dotpos > 4 || lastpos-dotpos < 2 )
<br />	{
<br />	   alert(alerttxt)		
<br />	   return false
<br />	} 
<br />  }
<br />}
<br />
<br /></script>
<br />
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