var calcVisable = false;
	function showCalc(state) {
		if ((calcVisable && state) || (!calcVisable && !state)) {
			document.getElementById('mCalc').style.top = (document.body.clientHeight/2)-300;
			document.getElementById('mCalc').style.left = (document.body.clientWidth/2)-150;
			calcVisable = true;
		}
	}
	function closeCalc() {
		document.getElementById('mCalc').style.top = -1000;
		document.getElementById('mCalc').style.left = -1000;
		calcVisable = false;
		return false;	
	}