function showCodeplex(){
	document.getElementById('overlay').style.height= '1000px';
	document.getElementById('overlay').style.display = 'block';
	document.getElementById('overlay_content').style.display = 'block';
	document.body.style.overflow='hidden';
}

function hideCodeplex(){
	document.getElementById('overlay').style.display = 'none';
	document.getElementById('overlay_content').style.display = 'none';
	document.body.style.overflow='auto';
}

function validateEmail(email)
{
	var emailStr = /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/;
	
	if (emailStr.test(email) == false)
	{
		return false;
	}
	
	return true;
}


function shiftProd(a,b){
	var stringer = "shiftImg('prod"+a+"',"+b+")";
	if (a != 0) var time = setInterval(stringer,2000);
	else var time = setInterval(stringer,4000);
}

function shiftImg(c,d){
	var nImages = document.getElementById(c).getElementsByTagName('img');
	//var nLinks = document.getElementById(c).getElementsByTagName('a');
	if(nImages.length > 0){
		var str = nImages[0].src;
		var num = str.substr(str.length-5).charAt(0);
		var ext = str.substr(str.length-4);
		if (num < d)
		{
			num++;
			str = str.replace(str.substr(str.length-5),num+ext);
			//str2 = str.replace(str.substr(str.length-5),num+"_g.jpg");
		}
		else{
			str = str.replace(str.substr(str.length-5),"1"+ext);
			//str2 = str.replace(str.substr(str.length-5),"1_g.jpg");
		}
		//alert(nImages[0]);
		if(c != 'prod0') nImages[0].src = str;
		else{
			nImages[0].style.opacity = 1;
			JSTweener.addTween(nImages[0].style, {
			    time: 0.5,
			    transition: 'easeincubic',
			    opacity: 0,
				onComplete: function(){
					nImages[0].src = str;
					JSTweener.addTween(nImages[0].style, {
						time: 0.5,
						transition: 'easeincubic',
						opacity: 1
					  });
				}
			  });

		}
		//nLinks[0].href = str2;
	}
}