/*
	javascript development
	============================
	website 	: 	Marbella
	date 		: 	8-4-2010		
	author 		: 	mayra metaxa / developer
	company		: 	mozaik creative business solutions
	url			:	http://www.mozaik.com

*/


function click_clear(id) 
{
	if (document.getElementById(id).value == document.getElementById(id).defaultValue)
		document.getElementById(id).value = "";
	else if (document.getElementById(id).value == "")
		document.getElementById(id).value = document.getElementById(id).defaultValue;
}


function click_clear_old(id, text)
{
	if (document.getElementById(id).value == text)
		document.getElementById(id).value = "";
}

function prefill(id, text)
{
	if (document.getElementById(id).value == "")
		document.getElementById(id).value = text;
}

/* ========= FORM functions ========= */


function show_error(id)
{
	document.getElementById(id).style.background="#DFEBFF";
}


function clear_errors(formid)
{
	var form = document.getElementById(formid);
	
	for (i=0;i<form.elements.length;i++)
	{
		if ( (form.elements[i].type != "button") && (form.elements[i].type != "reset") )
			form.elements[i].style.background="#F6F3F0";
	}
}


function checkEmail(elem)
{
   var field = document.getElementById(elem);
   var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
   if (field.value.length ==0)
		return false;

   if(field.value.match(emailExp))
		return true;
   else 
		return false;
   
}


function check_form(formid, mandatory_fields, numericfields, emailid)
{
	clear_errors(formid);
	
	//check mandatory fields
	var man = mandatory_fields.split(",");
	for (i=0;i<man.length;i++)
	{
		if (document.getElementById(man[i]).value == "")
		{
			show_error(man[i]);
			alert ("You must fill all the mandatory fields (*)");
			return false;
		}
	}		

	if (emailid!="")
	{
		if (!checkEmail(emailid))
		{
			show_error(emailid);
			alert ("Your email address is not valid.");
			return false;
		}
	}
	
	//check numeric fields
	if (numericfields != "")
	{
		var numeric = numericfields.split(",");
		for (i=0;i<numeric.length;i++)
		{
			document.getElementById(numeric[i]).value = document.getElementById(numeric[i]).value.replace(/,/,".");
			
			if (isNaN (document.getElementById(numeric[i]).value))
			{
				show_error(numeric[i]);
				alert (numeric[i]+": should be a number. Please check and try again!");
				return false;
			}
		}
	}
	
	document.getElementById(formid).submit();
}


function file_upload(file_id)	
{
	var file = document.getElementById(file_id);
	if (file.value == "")
	{
		alert("You have to attach a file!");
		return false;
	}
	
	var file1 = file.value.split(".");
	
	if (file1.length < 2)
	{
		alert("Invalid file path!");
		return false;
	}
	if ( (file1[file1.length-1] != "txt") && (file1[file1.length-1] != "doc") && (file1[file1.length-1] != "docx") && (file1[file1.length-1] != "rtf") && (file1[file1.length-1] != "pdf") && (file1[file1.length-1] != "zip") )
	{
		alert("Invalid file type! Accepted file types: .txt, .doc, .rtf, .pdf, .docx, .zip");
		return false;
	}

	return true;
		
}