

<!--Function to check the Empty Fields-->
function check(inputstr)
{
var len = inputstr.length
var flag=0;
for(var j=0;j<=len-1;j++)
{
if(inputstr.toString().charAt(j)!=" ")
   {flag=1;	
    break;}
  }
if(flag==0)
{return true}
return false;}


<!--END OF THE FUNCTION-->


var alph1=/^[a-zA-Z\s*\.]$/
function isLetterOrDigit1(c)
{
return alph1.test(c)
}

function first(x){
var b=x.length;

var s=x.charAt(0);
if(!(isLetterOrDigit1(s)))
{
return false;
}
return true;

}

<!--ALPHA NUMERIC -->
var alph=/^[a-zA-Z0-9\_]*$/
function isLetterOrDigit(c)
{
return alph.test(c)
}
function alnu(x){
var b=x.length;
for(var j=0;j<b;j++)
{
var s=x.substring(j,j+1);
if(!(isLetterOrDigit(s)))
{
return false;
}
}
return true;
}
<!-- END OF ALPHA NUMERIC -->

<!--FILTERING DOUBLE QUOTES -->

var dbqu=/^[^\"]*$/

function dbquotes(x){
var b=x.length;
for(var j=0;j<b;j++)
{
var s=x.substring(j,j+1);
if(!(dbqu.test(s)))
{
return false;
}
}
return true;
}
<!-- END OF THE FUNCTION -->