var DHTML = (document.getElementById || document.all || document.layers);



function cu_getObj(name)

{

  if (document.getElementById)

  {

  	this.obj = document.getElementById(name);

	this.style = document.getElementById(name).style;

  }

  else if (document.all)

  {

	this.obj = document.all[name];

	this.style = document.all[name].style;

  }

  else if (document.layers)

  {

   	this.obj = document.layers[name];

   	this.style = document.layers[name];

  }

}



function cu_changeColour(objname,col)

{

	if (!DHTML) return;

	var x = new cu_getObj(objname);

	x.style.color = col;

}



function cu_openWin(file,title,height,width)

{
var attrib = 'directory,resizable,scrollbars,width='+width+',height='+height;

    PopWindow=window.open(file,title,attrib);

}

function cu_hideLayer(lname)


{

 // figure out the browser


  bIsIE = navigator.appName == "Microsoft Internet Explorer";

  bIsNS4 = (document.layers) ? true : false;

  bIsIE4 = (document.all && !document.getElementById) ? true : false;

  bIsIE5 = (document.all && document.getElementById) ? true : false;

  bIsNS6 = (!document.all && document.getElementById) ? true : false;


  var layer; 

  if (bIsNS4){

   	layer = document.layers[lname];

  }


  else if (bIsIE4) {

   	layer = document.all[lname];

  }

  else if (bIsIE5 || bIsNS6) {

   	layer = document.getElementById(lname);

  }

  if (bIsIE || bIsNS6) 

  {

	layer.style.visibility = "hidden";

  }

  else

  {

  	layer.visibility = "hide";	

  }

}


function cu_showLayer(lname)


{

 if (lname == '') return;

  // figure out the browser

  bIsIE = navigator.appName == "Microsoft Internet Explorer";

  bIsNS4 = (document.layers) ? true : false;

  bIsIE4 = (document.all && !document.getElementById) ? true : false;

  bIsIE5 = (document.all && document.getElementById) ? true : false;

  bIsNS6 = (!document.all && document.getElementById) ? true : false;


 var layer 

	if (bIsNS4){

   		layer = document.layers[lname];

	}

	else if (bIsIE4) {

   		layer = document.all[lname];

	}

	else if (bIsIE5 || bIsNS6) {

   		layer = document.getElementById(lname);

	}




  if (bIsIE || bIsNS6) 

  {

	layer.style.visibility = "visible";

  }

  else

  {

  	layer.visibility = "show";

  }


}



function cu_emailCheck(str)

{

    var at="@"

    var dot="."

    var lat=str.indexOf(at)

    var lstr=str.length

    var ldot=str.indexOf(dot)


    if (str.indexOf(at)==-1){

        alert("Invalid E-mail ID")

        return false

    }





    if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){


        alert("Invalid E-mail ID")


        return false


    }





    if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){


        alert("Invalid E-mail ID")


        return false


    }





        if (str.indexOf(at,(lat+1))!=-1){

        alert("Invalid E-mail ID")

        return false

        }





        if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){

        alert("Invalid E-mail ID")

        return false

        }




        if (str.indexOf(dot,(lat+2))==-1){

        alert("Invalid E-mail ID")

        return false

        }


    


        if (str.indexOf(" ")!=-1){

        alert("Invalid E-mail ID")

        return false


        }


    var re_mail = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z])+$/;

    if (!re_mail.test(str)) {

        alert("Invalid E-mail ID")

        return false

    }

      return true					

}



// name - name of the cookie

// value - value of the cookie

// [expires] - expiration date of the cookie (defaults to end of current session)

// [path] - path for which the cookie is valid (defaults to path of calling document)

// [domain] - domain for which the cookie is valid (defaults to domain of calling document)

// [secure] - Boolean value indicating if the cookie transmission requires a secure transmission

// * an argument defaults when it is assigned null as a placeholder

// * a null placeholder is not required for trailing omitted arguments

function cu_setCookie(name, value, expires, path, domain, secure) {

  var curCookie = name + "=" + escape(value) +

      ((expires) ? "; expires=" + expires.toGMTString() : "") +

      ((path) ? "; path=" + path : "") +

      ((domain) ? "; domain=" + domain : "") +

      ((secure) ? "; secure" : "");

  document.cookie = curCookie;

}



// name - name of the desired cookie

// * return string containing value of specified cookie or null if cookie does not exist

function cu_getCookie(name) {

  var dc = document.cookie;

  var prefix = name + "=";

  var begin = dc.indexOf("; " + prefix);

  if (begin == -1) {

    begin = dc.indexOf(prefix);

    if (begin != 0) return null;

  } else

    begin += 2;

  var end = document.cookie.indexOf(";", begin);

  if (end == -1)

    end = dc.length;

  return unescape(dc.substring(begin + prefix.length, end));

}



// name - name of the cookie

// [path] - path of the cookie (must be same as path used to create cookie)

// [domain] - domain of the cookie (must be same as domain used to create cookie)

// * path and domain default if assigned null or omitted if no explicit argument proceeds

function cu_deleteCookie(name, path, domain) {

  if (getCookie(name)) {

    document.cookie = name + "=" + 

    ((path) ? "; path=" + path : "") +

    ((domain) ? "; domain=" + domain : "") +

    "; expires=Thu, 01-Jan-70 00:00:01 GMT";

  }

}