// JavaScript Document
function emailFormatCheck (s)
{   
  if (isEmpty(s)) 
   if (isEmail.arguments.length == 1) return true;
   else return (isEmail.arguments[1] == false);
		
  if (isWhitespace(s)) return true;
  
  var i = 1;
  var sLength = s.length;

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

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

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

  if ((i >= sLength - 1) || (s.charAt(i) != ".")) return true;
  else return false;
}
function isEmpty(s)
{   
	return ((s == null) || (s.length == 0))
}

function isWhitespace (s)
{   
	var whitespace = " \t\n\r";
	var i;

  if (isEmpty(s)) return true;
  for (i = 0; i < s.length; i++)
  {   
    var c = s.charAt(i);
    if (whitespace.indexOf(c) == -1) return false;
  }
  return true;
}
function isEmail (s)
{   
	if (isEmpty(s)) 
		if (isEmail.arguments.length == 1) return false;
		else return (isEmail.arguments[1] == true);
		
  if (isWhitespace(s)) return false;
  
  var i = 1;
  var sLength = s.length;

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

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

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

  if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
  else return true;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function checkinput()
	{
	    if (isWhitespace(document.contact.name.value))
		{
			alert("Enter your name!");
			document.contact.name.focus();
			return false;
		}		
	    if (isWhitespace(document.contact.email.value))
		{
			alert("Enter your E-mail!");
			document.contact.email.focus();
			return false;
		}		
		
		if(document.contact.email.value!="")
		{
			if (emailFormatCheck(document.contact.email.value))
			{
			alert('Wrong E-mail format');
			document.contact.email.focus();
			return false;
			}
		}
		
	    if (isWhitespace(document.contact.title.value))
		{
			alert("Enter your title!");
			document.contact.title.focus();
			return false;
		}		
		if (isWhitespace(document.contact.comments.value))
		{
			alert("Enter your idea!");
			document.contact.comments.focus();
			return false;
		}
	}