function checkEmail(fieldValue){	
	var chkAt = fieldValue.indexOf("@");
	var chkDot= fieldValue.indexOf(".");
	var chkHack= fieldValue.indexOf("@.");
	var chkHackA= fieldValue.indexOf(".@");

	if((chkAt >= 0) && (chkDot >= 0) && (chkHack == -1) && (chkHackA == -1) ) {
		return true;
	}
	return false;
}
/*
function validate_contact(form)
{
  msg = "";
  if (form.first_name.value == ''){
	msg += "Vorname\n";	
	alert(msg);               
	eval('form.first_name.focus()');
    return false;	  
  }
  if (form.last_name.value == ''){
	msg += "Nachname\n";	
	alert(msg);               
	eval('form.last_name.focus()');	 
	return false; 
  }
  if (form.email.value == ''){
	msg += "E-Mail\n";	
	alert(msg);               
	eval('form.email.focus()');	 
	return false; 
  }else if (!checkEmail(form.email.value)){
	msg += "E-Mail (Invalid Id)\n";	
	alert(msg);               
	eval('form.email.focus()');	 
	return false; 
  }
  
  if (form.my_concern.value == ''){
	msg += "Dein Anliegen\n";	
	alert(msg);               
	eval('form.my_concern.focus()');	 
	return false; 
  }
}
*/
function empty_form(form){
	form.first_name.value = "";
	form.last_name.value = "";
	form.email.value = "";
	form.my_concern.value = "";
	return false;	
}
function checkSelected(form)
{
  var radiosize = form.size; 
  var sizeflag = 0;
  for (i=0; i< radiosize.length && sizeflag==0; i++){
	  if (radiosize[i].checked){
		  sizeflag = 1;
	  }else{
		  sizeflag = 0;
	  }
  }
  if (sizeflag == 0){
	  alert ('Please select a size');
	  return false;
  } 
  
  var colorflag = 0;
  var radiocolor = form.color; 
  for (i=0; i< radiocolor.length && colorflag==0; i++){
	  if (radiocolor[i].checked){
		  colorflag = 1;
	  }else{
		  colorflag = 0;
	  }
  }
  
  if (colorflag == 0){
	  alert ('Please select a color');
	  return false;
  } 
 
 
}