function isEmail(s)
{   
	s=s.toLowerCase();
	if (s=="") return false;
	if(s.indexOf(" ")>0) return false;
	if(s.indexOf(".")==0) return false;
	if(s.indexOf("@")==0) return false;
	if(s.indexOf("@")==-1) return false;
	if (s.indexOf(".")==-1) return false;
	if (s.indexOf("..")!=-1) return false;
	if (s.charAt(s.indexOf("@")-1)=='.' ) return false;
	if (s.indexOf("@")!=s.lastIndexOf("@")) return false;
	if (s.indexOf("@") == s.length-1) return false;
	if (s.lastIndexOf(".")==s.length-1) return false;
	var str="abcdefghikjlmnopqrstuvwxyz-@._0123456789"; 
	for(var i=0;i<s.length;i++)
		if(str.indexOf(s.charAt(i))==-1)
			return false;
	return true;
}

function isEmpty(s)
{   
	return ((s == null) || (s.length == 0))
}

function checkWordpress(){
	if( document.getElementById('word_password').value == '' ){
		document.getElementById('word_password').className = 'field_error';
		document.getElementById('word_password').focus();
		error = 1 ;
	}else{
		document.getElementById('word_password').className = 'field';
	}
	if( document.getElementById('word_username').value == '' ){
		document.getElementById('word_username').className = 'field_error';
		document.getElementById('word_username').focus();
		error = 1 ;
	}else{
		document.getElementById('word_username').className = 'field';
	}
	if( error == 0 ){
		document.frmWordpress.submit();
	}	

}

function checkBlog(){
	var error = 0 ;	

	if( document.getElementById('password').value == '' ){
		document.getElementById('password').className = 'field_error';
		document.getElementById('password').focus();
		error = 1 ;
	}else{
		document.getElementById('password').className = 'field';
	}
	
	if( document.getElementById('username').value == '' ){
		document.getElementById('username').className = 'field_error';
		document.getElementById('username').focus();
		error = 1 ;
	}else{
		document.getElementById('username').className = 'field';
	}
	
	if( error == 0 ){
		document.frmBlog.submit();
	}	

}

function checkSendMail(){
	var error = 0 ;
	
	if( document.getElementById('txtYourFriendEmail').value == '' ){
		document.getElementById('txtYourFriendEmail').className = 'field_error';
		document.getElementById('txtYourFriendEmail').focus();
		error = 1;
	}else{
		document.getElementById('txtYourFriendEmail').className = 'field';
	}

	if( !isEmail(document.getElementById('txtYourEmail').value) ){
		document.getElementById('txtYourEmail').className = 'field_error';
		document.getElementById('txtYourEmail').focus();
		error = 1 ;
	}else{
		document.getElementById('txtYourEmail').className = 'field';
	}
	
	if( document.getElementById('txtYourName').value == '' ){
		document.getElementById('txtYourName').className = 'field_error';
		document.getElementById('txtYourName').focus();
		error = 1;
	}else{
		document.getElementById('txtYourName').className = 'field';
	}
	
	if( error == 0 ){
		document.frmSendMail.submit();
	}
}// end function