function toggle(div_id) {
	var el = document.getElementById(div_id);
	if ( el.style.display == 'none' ) {	el.style.display = 'block';}
	else {el.style.display = 'none';}
}
function blanket_size(popUpDivVar) {
	if (typeof window.innerWidth != 'undefined') {
		viewportheight = window.innerHeight;
		viewportwidth  = eval(window.innerWidth) - eval(16);
	} else {
		viewportheight = document.documentElement.clientHeight;
		viewportwidth  = document.documentElement.clientWidth;
	}
	if ((viewportheight > document.body.parentNode.scrollHeight) && (viewportheight > document.body.parentNode.clientHeight)) {
		blanket_height = viewportheight;
	} else {
		if (document.body.parentNode.clientHeight > document.body.parentNode.scrollHeight) {
			blanket_height = document.body.parentNode.clientHeight;
		} else {
			blanket_height = document.body.parentNode.scrollHeight;
		}
	}

	// Set the Height.
	if ((viewportwidth > document.body.parentNode.scrollWidth) && (viewportwidth > document.body.parentNode.clientWidth)) {
		blanket_width = viewportwidth;
	} else {
		if (document.body.parentNode.clientWidth > document.body.parentNode.scrollWidth) {
			blanket_width = document.body.parentNode.scrollWidth;
		} else {
			blanket_width = document.body.parentNode.scrollWidth;
		}
	}
	var blanket = document.getElementById('blanket');
	blanket.style.height = blanket_height + 'px';
	blanket.style.width = (blanket_width-1) + 'px';
	/*var popUpDiv = document.getElementById(popUpDivVar);
	popUpDiv_height=blanket_height/2-500;//150 is half popup's height
	popUpDiv.style.top = popUpDiv_height + 'px';*/

}
function window_pos(popUpDivVar) {
	if (typeof window.innerWidth != 'undefined') {
		viewportheight = window.innerHeight;
		viewportwidth = window.innerHeight;
	} else {
		viewportheight = document.documentElement.clientHeight;
		viewportwidth = document.documentElement.clientHeight;
	}
	
	var ScrollTop = document.body.scrollTop;
	if (ScrollTop == 0)
	{
		if (window.pageYOffset)
			ScrollTop = window.pageYOffset;
		else
			ScrollTop = (document.body.parentElement) ? document.body.parentElement.scrollTop : 0;
	}
	
	// Set Width
	if ((viewportwidth > document.body.parentNode.scrollWidth) && (viewportwidth > document.body.parentNode.clientWidth)) {
		window_width = viewportwidth;
	} else {
		/*if (document.body.parentNode.clientWidth > document.body.parentNode.scrollWidth) {
			window_width = document.body.parentNode.clientWidth;
		} else {
			window_width = document.body.parentNode.scrollWidth;
		}*/
		window_width = document.body.parentNode.clientWidth;
	}
	var popUpDiv = document.getElementById(popUpDivVar);
	window_width = window_width/2-(popUpDiv.offsetWidth/2);
	popUpDiv.style.left = window_width + 'px';
	
	popUpDiv_height = (viewportheight/2) + ScrollTop - (popUpDiv.offsetHeight/2);
	popUpDiv.style.top = popUpDiv_height + 'px';
}
function popup(windowname) {
	blanket_size(windowname);
	//window_pos(windowname);
	toggle('blanket');
	toggle(windowname);
	window_pos(windowname);
}

// Function to close the opened Pop-Up div on clicking outside of the pop-up div area.
function closePopUpWindow(div_class) {
	document.getElementById('blanket').style.display = 'none';
	for (var i = 0; i < document.getElementsByClassName(div_class).length; i++) {
	    document.getElementsByClassName(div_class)[i].style.display = 'none';
	}
}// JavaScript Document// JavaScript Document