function closePopup(){
		
		var pop = document.getElementById("popup");
		var over = document.getElementById("overlay");

		pop.style.display="none";
		over.style.display="none";
	
	}

	function setPopup() {

		var pop = document.getElementById("popup");
		var over = document.getElementById("overlay");
		var myWidth = 0, myHeight = 0;

		  if( typeof( window.innerWidth ) == 'number' ) {
			myWidth = window.innerWidth;
			myHeight = window.innerHeight;
		  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
			myWidth = document.documentElement.clientWidth;
			myHeight = document.documentElement.clientHeight;
		  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
			myWidth = document.body.clientWidth;
			myHeight = document.body.clientHeight;
		  }

		  over.style.display="block";
		  pop.style.left=(myWidth-350)/2+"px";
		  pop.style.display="block";

	}