var checkflag = "false";

function check(field) {
	if (checkflag == "false")
	{
		for (i = 0; i < field.length; i++)
		{
			field[i].checked = true;
		}
		checkflag = "true";
		return "Uncheck All"; 
	}else{
		for (i = 0; i < field.length; i++)
		{
			field[i].checked = false;
		}
		checkflag = "false";
		return "Check All";
	}
}

function confirm_do()
{
	var confirmed = confirm("Are you sure you want to do that?");
	if(confirmed)
	{
		return true;
	}else{
		return false;
	}
}

function check_form(error, get_field)
{
	if(get_field=="")
	{
		alert(error);	
		return false;
	}else{
		return true;
	}

}

/*validate the contact form*/
function  validate_contact()
{
	if(document.contact.name.value!="")
	{
		var email_reg=/^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
		if(email_reg.test(document.contact.email.value))
		{
			if(document.contact.body_txt.value!="")
			{					
				return true;
			}else{
				alert("Please enter content");
				return false;
			}
		}else{
			alert("Please enter a real email");
			return false;
		}
	}else{
		alert("Please enter your name");
		return false;
	}			
}		

/*this will get the style attributes of a css element - ussualyl a div or span */
function getStyleObject(objectId) {
    // cross-browser function to get an object's style object given its
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];
    } else {
	return false;
    }
} // getStyleObject

      
function load_admin(div, url_in)
{
	height = document.getElementById(div).offsetHeight + 100 + 'px';
	var url = url_in + '&height=' + height;
	window.location.href = url;
}			

/* Nav Hack for IE */
function startList() 
{
	if(document.all && document.getElementById)
	{
		navRoot = document.getElementById("nav");
		for (i=0; i<navRoot.childNodes.length; i++)
		{
			node = navRoot.childNodes[i];
			if (node.nodeName=="LI")
			{
				node.onmouseover=function()
				{
					this.className+=" over";
				}
				node.onmouseout=function()
				{
					this.className=this.className.replace
					(" over", "");
			 	}
			}
		}
	}
}
/* End Nav Hack for IE */

/*preload images function*/
var preloaded = new Array();
function preload_images()
{
    for (var i = 0; i < arguments.length; i++)
	{
        preloaded[i] = document.createElement('img');
        preloaded[i].setAttribute('src',arguments[i]);
    };
};

/*********************************************************************************************************************************************
BEGIN HEADLINE ROTATION SET UP
*********************************************************************************************************************************************/
var the_timeout;
var j=2;
var k = 1;
var timer = null;
var headlines_arr = new Array();
var headline_loaded=1;

/*this function will receive the array and allocate the data*/
function make_headline(file)
{
	this.file = file;
	this.write = show_headline;
}

function slide_headline()
{
  // get the stylesheet
  var style_show = getStyleObject('headline_show');
  var style_next = getStyleObject('headline_next');
 
  if (style_show)
  {
	// get the current coordinate and add 5
	var current_opac = (style_show.opacity);
	var new_opac = current_opac - .04;

	style_show.opacity = new_opac;
	style_show.filter = 'alpha(opacity=' + new_opac*100 + ')';

	if (new_opac >= .04)
	{
		setTimeout('slide_headline();', 0);
	}else{

		var len = headlines_arr.length;
		if(k >= len)
		{
			k = 0;
		}
		
		if(k+1<len)
		{
			j=k+1;	
		}else{
			j=0;
		}
		
		style_show.opacity = 1;
		style_show.filter = 'alpha(opacity=100)';
		
		document.getElementById('headline_show').innerHTML = headlines_arr[k];	
		document.getElementById('headline_next').innerHTML = headlines_arr[j];
		
		k++;
		timer = setTimeout('slide_headline();',6000);
	}
  }
}

function pause_headline()
{
	if (timer != null)
	{
		clearTimeout(timer);
		timer = null;
	}
}

function play_headline()
{
	if (timer == null)
	{
		slide_headline();	
	}else{
		slide_headline();	
	}
}

/*********************************************************************************************************************************************
END HEADLINE ROTATION SET UP
*********************************************************************************************************************************************/