/*
1	--------->		Numeric Value validation 
2	--------->		Email validation
*/ 
// Email validation
function isEmail (s)
{   if (isEmpty(s)) 
       return false;
   
    // is s whitespace?
    if (isWhitespace(s)) return false;
    
    // there must be >= 1 character before @, so we
    // start looking at character position 1 
    // (i.e. second character)
    var i = 1;
    var sLength = s.length;

    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }

    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;

    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }

    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}


function isInteger (s)

{   var i;

    if (isEmpty(s)) 
       return false;

    // Search through string's characters one by one
    // until we find a non-numeric character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);

        if (!isDigit(c)) return false;
    }

    // All characters are numbers.
    return true;
}

function isDigit (c)
{   return ((c >= "0") && (c <= "9"))
}

// Check whether string s is empty.
function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}

// Returns true if string s is empty or 
// whitespace characters only.
// whitespace characters
var whitespace = " \t\n\r";

function isWhitespace (s)

{   // Is s empty?
    if (isEmpty(s)) return true;

    // Search through string's characters one by one
    // until we find a non-whitespace character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);

        if (whitespace.indexOf(c) == -1) return false;
    }

    // All characters are whitespace.
    return true;
}

function validate(thisform)
{	
        for (var j=0; j<(thisform.elements.length); j++)
                {
				valu = thisform.elements[j].name;
                indx = valu.indexOf('_required');				
                if (indx != -1)
                   {						
                        fieldname=thisform.elements[j].name.substring(0,indx);						
                        if ((thisform.elements[fieldname].value.length == 0) || (isWhitespace(thisform.elements[fieldname].value)))
                                {				
                                alert(thisform.elements[j].value);
								thisform.elements[fieldname].focus();
                                //j = (thisform.elements.length);
                                return false;
                                }
						switch (parseInt(valu.charAt(valu.length-1)))
						{
						case 1:
							{
								if(!(isInteger(thisform.elements[fieldname].value)))
								{
									alert(thisform.elements[j].value);
									thisform.elements[fieldname].focus();
	                            	//j = (thisform.elements.length);
	                            	return false;	
								}
								break;
							}
						case 2:
							{
								if(!(isEmail(thisform.elements[fieldname].value)))
								{
									alert(thisform.elements[j].value);
									thisform.elements[fieldname].focus();
	                            	//j = (thisform.elements.length);
	                            	return false;	
								}
								break;
							}
						}
                   }
                }
		
        return true;
}