/*function test()
{

 var str1 =document.getElementById('txtCaptcha').value;
   //alert(str1);
   var imgcode=document.getElementById('seccode').name;
   //alert(imgcode);
   if ( str1 != imgcode ){ alert ( "Security Code failed! Try again!" );

return false;
}
 else {return true}
}*/
<!--starting validations-->
function validate_name(field,alerttxt)
{
 with (field)
  { 
    var str =value;
    var re =/^[a-zA-Z]/;
    str = str.toString();
    if (value==null||value=="") 
    {alert(alerttxt);return false}
    else if (!str.match(re)) 
     {alert("Enter only characters into the name field.");return false}
    else {return true}
  }
}
function validate_email(field,alerttxt)
{
with (field)
{
var str =value;
 str = str.toString();
  if (value==null||value=="") 
    {alert("please Enter Email Address.");return false}
   
apos=value.indexOf("@");
dotpos=value.lastIndexOf(".");
if (apos<1||dotpos-apos<2) 
  {alert(alerttxt);return false;}
else {return true;}
}
}
function validate_phone(field,alerttxt)
{
 with (field)
  {
    var str =value;
    var re = /^[-]?\d*\.?\d*$/;
    str = str.toString();
     if (value==null||value=="")
    {alert(alerttxt);return false}
    else if (!str.match(re)) 
       {alert("Enter only numbers into the field.");return false}
	else if(value.length >"10" )
	{ alert("Enter correct Phone No.");return false}
	else {return true}
  }
}
/*function validate_Captcha(field,alerttxt)
{

 with (field)
{
    var str=value;
   
    if (value==null||value=="") 
    {alert(alerttxt);return false}
    else if(value.length !="5" )
	{ alert("Enter correct Security code.");return false}
	else {return true}
  }
}*/
function validate_form(thisform)
{
with (thisform)
{
if (validate_name(firstname,"Please Enter the First Name")==false)
   {firstname.focus();return false}
if (validate_name(lastname,"Please Enter the Last Name")==false)
   {lastname.focus();return false}
//if (validate_phone(phone,"Please specify your Phone Number!")==false)
//  {phone.focus();return false}   
if (validate_email(emailid,"Not a valid e-mail address!")==false)
   {emailid.focus();return false;}
/* if (validate_Captcha(txtCaptcha,"Please specify Security Code!")==false)
   {txtCaptcha.focus();return false}  
  if ( test()==false)
   {txtCaptcha.focus();return false} */ 
 }
}
<!--ending validations-->
function formReset()
{
document.getElementById("frmCaptcha").reset();
alert("Form details are cleared");
}

/**********************************/
function toggle(chkbox, group) { 
    var visSetting = (chkbox.checked) ? "visible" : "hidden"; 
    document.getElementById(group).style.visibility = visSetting; 
} 
function swap(radBtn, group) { 
    var modemsVisSetting = (group == "modems") ? ((radBtn.checked) ? "" : "none") : "none"; 
    document.getElementById("modems").style.display = modemsVisSetting; 
} 
function toggle1(chkbox, group) { 
    var visSetting = (chkbox.checked) ? "visible" : "hidden"; 
    document.getElementById(group).style.visibility = visSetting; 
} 
function swap1(radBtn, group) { 
    var modemsVisSetting = (group == "modems") ? ((radBtn.checked) ? "" : "none") : "none"; 
    document.getElementById("modems").style.display = modemsVisSetting; 
} 

/*********************************
    $(function() {
        $('#gallery a').lightBox();
    });
**********************************/
var nW,nH,oH,oW;
function zoom(iWideSmall,iHighSmall,iWideLarge,iHighLarge,whichImage)
{
	oW=whichImage.style.width;oH=whichImage.style.height;
	if((oW==iWideLarge)||(oH==iHighLarge))
	{
		nW=iWideSmall;nH=iHighSmall;
	}
	else
	{
		nW=iWideLarge;nH=iHighLarge;
	}
	whichImage.style.width=nW;whichImage.style.height=nH;
}


/**************************************************/