function checkSize()
{
	if(document.getElementById('Size').options[document.getElementById('Size').options.selectedIndex].text.indexOf('Unavailable') >= 0)
        {
            alert("The size you have selected is Unavailable in the selected color. Please choose another color/size combination.");
        }
	else if(document.forms[1].Size.options.selectedIndex == 0)
		alert("Please select a size for this product.");
        else
		document.forms[1].submit();
}