function iecheck()
{
	var pos = navigator.userAgent.indexOf("MSIE ");
	if (pos == -1) return false;
	var version = navigator.userAgent.substring(pos + 5);
	return (((version.indexOf("5.5") == 0) || (version.indexOf("6") == 0)  || (version.indexOf("7") == 0)));
}

function isempty(str)
{
	r = new RegExp("^[ .*]$");
	return (r.test(str) || str.length == '');
}

function checkValidEmail(mailstr) 
{
	r = new RegExp("^[0-9a-zA-Z\\._\\-]{2,}@([0-9a-zA-Z_\\-]{2,}\\.){1,7}[a-zA-Z]{2,3}$");
	return r.test(mailstr);
}

function ie_png_check()
{
	var pos = navigator.userAgent.indexOf("MSIE ");
	if (pos == -1) return false;
	var version = navigator.userAgent.substring(pos + 5);
	return ((version.indexOf("5.5") == 0) || (version.indexOf("6") == 0));
}

// PNG ALPHA CHANNEL IMG-RE //
function iepng_alphachannel(imgid,timg,size)
{
	if(ie_png_check())
	{
		d = document.getElementById(imgid);
		origsrc = d.src;
		d.src = timg;
		d.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + origsrc + "',sizingMethod='image')";
		d.width = size[0];
		d.height = size[1];
	}
}

// PNG ALPHA CHANNEL DIV BACKGROUND //
function iepng_alphachannel_bg(divid,bgimg,size)
{
	d = document.getElementById(divid);
	d.style.width = size[0]+"px";
	d.style.height = size[1]+"px";
	if(iecheck())
	{
		d.style.background = '';
		d.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + bgimg + "',sizingMethod='image')";
	}
}

function emailchange(obj,cim,inner)
{
	d = document.getElementById(obj);
	r = new RegExp("#");
	n = new RegExp("\\*","g");
	cim = cim.replace(r,"@");
	cim = cim.replace(n,".");
	d.href = "mailto:"+cim;
	if(inner) d.innerHTML = cim;
}