//Created / Generates the captcha function    
    function DrawCaptcha()
    {
        var a = Math.ceil(Math.random() * 10)+ '';
        var b = Math.ceil(Math.random() * 10)+ '';       
        var c = Math.ceil(Math.random() * 10)+ '';  
        var d = Math.ceil(Math.random() * 10)+ '';  
        var e = Math.ceil(Math.random() * 10)+ '';  
        var f = Math.ceil(Math.random() * 10)+ '';  
        var g = Math.ceil(Math.random() * 10)+ '';  
        // var code = a + ' ' + b + ' ' + ' ' + c ;
		var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
	var string_length = 4;
	var code = '';
	for (var i=0; i<string_length; i++) {
		var rnum = Math.floor(Math.random() * chars.length);
	code += chars.substring(rnum,rnum+1);
	}



		
        document.getElementById("txtCaptcha").value = code
    }