/* This helps our friends with IE browsers have dropdown menus. Thank you son of suckerfish! */
function sfHover() {
	//	Make sure browser is capable to doing the things we need.
	if(!document.getElementsByTagName) return false;
	if(!document.getElementById) return false;
	
	//	Do the class changes as appropriate.
	var sfEls = document.getElementById('main_navigation').getElementsByTagName('LI');
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=' sfhover';
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(' sfhover\\b'), '');
		}
	}
}


/*
	Standards Compliant Rollover Script
	Author : Daniel Nolan
	http://www.bleedingego.co.uk/webdev.php
	
	Add the attribute class="imgover" to any image in your document that requires a mouseover effect to be trigger
    Hover image is named exactly the same as the original image plus _o at the end of name
*/

function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
	
		//there may be multiple class assignments
		//separates the img class into an array
		classes = aImages[i].className.split(" ");
				
		//checks if img has a class of menu
		//if so, set up rollover
		if ( inArray('imgover', classes) ) {

			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_o'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}

		}
	}
}

function inArray( value, array ) {
//passed a value and an array, this function returns true
//if the value is contained with in the array,
//false if it is not

	for ( var i = 0; i < array.length; i++ )
		if ( array[i] == value )
			return true;
	return false;
} 

//adds functions to the windows onload event
function addOnload(newFunction) {
        var oldOnload = window.onload;
        // does window.onload exist
        if (typeof oldOnload == "function") {
                //overwriting existing onload
                window.onload = function() {
                if (oldOnload) {oldOnload();}
                        newFunction();
                }
        }  else {
                window.onload = newFunction;
        }
} 

function validate() {
        if (document.getElementById('email') && document.getElementById('email_confirm')) {
                if ( document.getElementById('email').value != document.getElementById('email_confirm').value ) {
                        alert("Email and Confirm Email do not match");
                        return false;
               }
        }
        return true;
}

addOnload(sfHover);
addOnload(initRollovers);