function createModalContainer(previewImageObject){
	size = getPageSize();
	modal = document.getElementsByTagName("body")[0].appendChild(document.createElement("div"));
	modal.id = "modalContainer";
	//modal.style.width = size[0] - 19+"px";
	modal.style.width = size[2] - 17+"px";
	modal.style.height = size[1]+"px";
	frame = modal.appendChild(document.createElement("iframe"));
	frame.id = "contentFrame";
	frame.style.width = size[2] - 300+"px";
	frame.style.height = size[3] - 100+"px";
	frame.src = pressItems[previewImageObject.id].url;
	closeButton = modal.appendChild(document.createElement("img"));
	closeButton.id = "closeButton";
	closeButton.src = "images/close.jpg";
	closeButton.onclick = function(){
		removeModal();
	}
}
function removeModal(){
	document.getElementsByTagName("body")[0].removeChild(document.getElementById("modalContainer")); 
}
function getPageSize(){
	var xScroll, yScroll;
	if(window.innerHeight && window.scrollMaxY){	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	}
	else if(document.body.scrollHeight > document.body.offsetHeight){
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	}
	else{
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	var windowWidth, windowHeight;
	if(self.innerHeight){
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	}
	else if(document.documentElement && document.documentElement.clientHeight){
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	}
	else if(document.body){
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	if(yScroll < windowHeight){ pageHeight = windowHeight; }
	else{ pageHeight = yScroll; }
	if(xScroll < windowWidth){ pageWidth = windowWidth; }
	else{ pageWidth = xScroll; }
	arrayPageSize = new Array(pageWidth, pageHeight, windowWidth, windowHeight) 
	return arrayPageSize;
}