function valid(form)
{
	var field1= form.loginid;
	var field2= form.password;
		Userid 		=field1.value;
		Password	=field2.value;
	
	if (Userid.length==0)
	{
		alert("Please provide your UserID");
		field1.focus();
		return false;
	}	
	else if (Password.length==0)
	{
		alert("Please provide your password");
		field2.focus();
		return false;
	}
	else
	{
		return true;
	}
}
/*
function validsearch(form)
{
	var field1= form.search;
	Search=field1.value;
	if (Search.length==0)
	{
		alert("Please type any string to search");
		field1.focus();
		return false;
	}
	else
	{
		return true;
	}
}

*/

function validate(form)
{
	var field1= form.fname;
	var field2= form.lname;
	var field3= form.loginid;
	var field4= form.password;
	var field5= form.cpassword;
	var field6= form.emailid;
	var field7= form.yr;
	var field8= form.mth;
	var field9= form.dte;
	var field10= form.squestion;
	var field11= form.answer;
	var field12= form.termsandcondition;
		fname			=field1.value;
		lname			=field2.value;
		loginid			=field3.value;
		password		=field4.value;
		cpassword		=field5.value;
		emailid			=field6.value;
		yr				=field7.value;
		mth				=field8.value;
		dte				=field9.value;
		squestion		=field10.value
		answer			=field11.value;
	termsandcondition	=field12.value;
	
	if (fname.length <1) 
	{
		alert("please enter your first name");
		field1.focus();
		return false;
	}
	else if (lname.length <1) 
	{
		alert("Please enter your Last name");
		field2.focus();
		return false;
	}
	else if ((loginid.length<1)||(loginid.indexOf(' ',0) != -1))
	{
		alert("Please provide your UserID and it should not contain whitespace.");
		field3.focus();
		return false;
	}
	else if (loginid.length <6) 
	{
		alert("User Name is too short. It should be minimum 6 characters");
		field3.focus();
		return false;
	}
	else if (loginid.length>30) 
	{
		alert("UserID is too large");
		field3.focus();
		return false;
	}
	
	else if ((password.length<1)||(password.indexOf(' ',0) != -1))
	{
		alert("Your password must be at least 6 characters long and contain no whitespace.");
		field4.focus();
		return false;
	}
	else if (password.length <6) 
	{
		alert("Password is too short. It should be minimum of 6 characters");
		field4.focus();
		return false;
	}	
	else if (password.length>25) 
	{
		alert("Password is too large");
		field4.focus();
		return false;
	}
	else if (cpassword.length==0)
	{
		alert("The Retype Password cannot be left blank");
		field5.focus();
		return false;
	}
	else if(password!=cpassword)
	{
		alert("Password and Retype Password must be same");
		field5.focus();
		return false;
	}
	else if(emailid.length==0)
	{
		alert("Please provide correct EmailID.");
		field6.focus();
		return false;
	}
	else if(emailid.indexOf("@") == -1)
	{
		alert("Please provide a valid Email-ID");
		field6.focus();
		return false;
	}
	else if(yr.length==0)
	{
		alert("Please select year");
		field7.focus();
		return false;
	}
	else if(mth.length==0)
	{
		alert("Please select month");
		field8.focus();
		return false;
	}
	else if(dte.length==0)
	{
		alert("Please select date");
		field9.focus();
		return false;
	}
	/*else if (Phone.length==0 || (isNaN(Phone)))
	{	
		alert("Please provide Phone No. only Numeric");
		field7.focus();
		return false;
	}
	else if (Phone.length>25) 
	{
		alert("Please provide a Valid Phone No.");
		field7.focus();
		return false;
	}*/
	else if(squestion.length==0)
	{
		alert("Please select a secret question");
		field10.focus();
		return false;
	}
	else if (answer.length==0) 
	{
		alert("Please provide Answer for your selected question");
		field11.focus();
		return false;
	}
	else if (form.termsandcondition.checked == false )
	{
		alert('Please accept the terms and conditions to continue.');
		field12.focus();
		return false;
	}
	var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?";
	for (var i = 0; i < document.form1.loginid.value.length; i++) {
  	if (iChars.indexOf(document.form1.loginid.value.charAt(i)) != -1) {
  	alert ("Your username has special characters. \nThese are not allowed.\n Please remove them and try again.");
  	return false;
  	}
  }

}
//validate sale product
function validsellproduct(form)
{
var field1= form.ftitle;
var field2= form.productname;
var field6= form.pcategory;
var field3= form.price;
var field4= form.emailid;
var field5= form.briefdescription;
ftitle		=field1.value;
productname	=field2.value;
pcategory	=field6.value;
price 		=field3.value;
emailid		=field4.value;
briefdescription =field5.value;

if (ftitle.length==0)
{
alert("Please provide your title");
field1.focus();
return false;
} 
else if (productname.length==0)
{
alert("Please provide your productname");
field2.focus();
return false;
}
else if (pcategory.length==0)
{
alert("Please select your product category");
field6.focus();
return false;
}
else if (price.length==0)
{
alert("Please provide your price");
field3.focus();
return false;
}
else if (price.length==0 || (isNaN(price)))
	{	
		alert("Please provide price only Numeric");
		field3.focus();
		return false;
	}
else if(emailid.length==0)
{
alert("Please provide correct EmailID.");
field4.focus();
return false;
}
else if(emailid.indexOf("@") == -1)
{
alert("Please provide a valid Email-ID");
field4.focus();
return false;
}
else if (briefdescription.length==0)
{
alert("Please provide your product brief description");
field5.focus();
return false;
}
else if (briefdescription.length>200)
{
alert("Max 200 charachter");
field5.focus();
return false;
}
    var filename = document.form1.file1.value;
    var fileext = filename.substring(filename.lastIndexOf('.')+1);
	fileext=fileext.toLowerCase();

	if(fileext!="jpg" && fileext!="gif" && fileext!="bmp" && fileext!="jpeg" ) 
	{
	alert("Invalid file Format! Only .jpg, .gif, .bmp, .jpeg format are allowed");
	document.form1.file1.value="";
	document.form1.file1.focus();
	return false;
	}


else
{
return true;
}
} 

//valedate free classified
function validfreeclassified(form)
{
var field1= form.ftitle;
var field2= form.briefdescription;
var field3= form.emailid;
ftitle				=field1.value;
briefdescription	=field2.value;
emailid				=field3.value;
if (ftitle.length==0)
{
alert("Please provide your title");
field1.focus();
return false;
} 
else if (briefdescription.length==0)
{
alert("Please provide your product brief description");
field2.focus();
return false;
}
else if (briefdescription.length>200)
{
alert("Max 200 charachter");
field2.focus();
return false;
}
else if(emailid.length==0)
{
alert("Please provide correct EmailID.");
field3.focus();
return false;
}
else if(emailid.indexOf("@") == -1)
{
alert("Please provide a valid Email-ID");
field3.focus();
return false;
}

else
{
return true;
}
} 
//validate quote to us
function validquotetous(form)
{
	var field1= form.name;
	var field2= form.quote;
		name 		=field1.value;
		quote		=field2.value;
	
	if (name.length==0)
	{
		alert("Please provide your full name");
		field1.focus();
		return false;
	}	
	else if (quote.length==0)
	{
		alert("Please provide quote");
		field2.focus();
		return false;
	}
	else if (quote.length>200)
	{
		alert("max 200 chaacter only");
		field2.focus();
		return false;
	}

	else
	{
		return true;
	}
}

<!-- start browse script -->
<!--01 -->

var lastfieldname = ''
function preview(i) 
{
var file = i.value
if (file.length<=0) return;
var ipreview = document.all('ipreview')
ipreview.src = 'file://' + file
}

<!--end brouser script -->

//validate you update sell product
function validupdatesellproduct(form)
{
var field1= form.ftitle;
var field2= form.productname;
var field6= form.pcategory;
var field3= form.price;
var field4= form.emailid;
var field5= form.briefdescription;
ftitle		=field1.value;
productname	=field2.value;
pcategory	=field6.value;
price 		=field3.value;
emailid		=field4.value;
briefdescription =field5.value;

if (ftitle.length==0)
{
alert("Please provide your title");
field1.focus();
return false;
} 
else if (productname.length==0)
{
alert("Please productname field can not be leave blank");
field2.focus();
return false;
}
else if (pcategory.length==0)
{
alert("Please select your product category");
field6.focus();
return false;
}
else if (price.length==0)
{
alert("Please price field can not be leave blank");
field3.focus();
return false;
}
else if (price.length==0 || (isNaN(price)))
	{	
		alert("Please provide price only Numeric");
		field3.focus();
		return false;
	}
else if(emailid.length==0)
{
alert("Please provide correct EmailID.");
field4.focus();
return false;
}
else if(emailid.indexOf("@") == -1)
{
alert("Please provide a valid Email-ID");
field4.focus();
return false;
}
else if (briefdescription.length==0)
{
alert("Please provide your product brief description");
field5.focus();
return false;
}
else if (briefdescription.length>200)
{
alert("Max 200 charachter");
field5.focus();
return false;
}
else
{
return true;
}
} 
//validate website
function website(form)
{
	var field1= form.name;
	var field2= form.emailid;
	var field3= form.websiteurl;
	var field4= form.keyword;
		name 		=field1.value;
		emailid		=field2.value;
		websiteurl	=field3.value;
		keyword		=field4.value;
	
	if (name.length==0)
	{
		alert("Please provide your good name");
		field1.focus();
		return false;
	}	
	else if(emailid.length==0)
{
alert("Please provide correct EmailID.");
field2.focus();
return false;
}
else if(emailid.indexOf("@") == -1)
{
alert("Please provide a valid Email-ID");
field2.focus();
return false;
}
else if (websiteurl.length==0)
	{
		alert("Please provide your website url");
		field3.focus();
		return false;
	}
else if (keyword.length==0)
	{
		alert("Please provide your keyword");
		field4.focus();
		return false;
	}
	else if (keyword.length>200)
	{
		alert("only max 200 character");
		field4.focus();
		return false;
	}
	else
	{
		return true;
	}
}
//validate search
function validsearch(form)
{
	var field1= form.mysearch;
	var field2= form.pcate;
		Userid 		=field1.value;
		Password	=field2.value;
	
	if (Userid.length==0)
	{
		alert("Please provide your search item name");
		field1.focus();
		return false;
	}	
	else if (Password.length==0)
	{
		alert("Please provide your password");
		field2.focus();
		return false;
	}
	else
	{
		return true;
	}
}