function openBrWindow(theURL) {
  var open_win = window.open(theURL,'pop','width=360,height=533');
  open_win.focus();
}

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];}
}

String.prototype.trim = function() {

 // skip leading and trailing whitespace
 // and return everything in between
  var x=this;
  x=x.replace(/^\s*(.*)/, "$1");
  x=x.replace(/(.*?)\s*$/, "$1");
  return x;
}

function checknumber(fld,e) {
		var key = '';
		var i = j = 0;
		var strCheck = '0123456789';
		var whichCode = (window.Event) ? e.which : e.keyCode;
		if (whichCode == 8) return true;  // Backspace
		key = String.fromCharCode(whichCode);  // Get key value from key code
		if (strCheck.indexOf(key) == -1) return false;  // Not a valid key
		return true;
	}
	
	
	
function isEmpty(s)
{
	
	var tx = String(s+"");
	tx = tx.trim();
	for(i=0; i<tx.length; i++)
	if(tx.charAt(i)!=" ")
	return false;
		
	return true;
		
}

function isValidEmail(theemail)
{
		
		var thisemail = String(theemail)
		var result = false
		
		var index = thisemail.indexOf("@");
		  
		if (index > 0)
		{
			var pindex = thisemail.indexOf(".",index);
			if ((pindex > index+1) && (thisemail.length > pindex+1))
			result = true;
		}
		
		return result;
		
}

function check_submission()
{
		
		
		var sendform = true;
				
				
		if(isEmpty(document.forms[0].thename.value))	
		{
			alert("Παρακαλώ συμπληρώστε το όνομα σας.")
			sendform = false;
		}
		else if(isEmpty(document.forms[0].thesurname.value))
		{
			alert("Παρακαλώ συμπληρώστε το επώνυμο σας.")
			sendform = false;
		}
		else if(isEmpty(document.forms[0].phone.value))
		{
			alert("Παρακαλώ συμπληρώστε το τηλέφωνό σας.")
			sendform = false;
		}
		else if(isEmpty(document.forms[0].email.value))
		{

			alert("Παρακαλώ συμπληρώστε το email σας.")
			sendform = false;

		}
		else if(!isValidEmail(document.forms[0].email.value))
		{	
			alert("Υπάρχει λάθος στο email σας.")
			sendform = false;
		}	
				

			
		if(sendform)
		{
			document.forms[0].submit();
		}	
		
		
}