function getScreenHeight(){
		var div=document.createElement("div");
		div.style.position='absolute';
		div.style.width='100px';
		div.style.innerHTML='asd';
		div.style.left='1px';
		div.style.top='1px';
				div.style.backgroundColor='red';
		div.style.height='100%';
		div.id='getHeight';
		document.body.appendChild(div);
		var height=document.getElementById('getHeight').clientHeight;
		var div=document.getElementById('getHeight');
		document.body.removeChild(div);
		return(height);	
}
function showPopup(title,value,width,height,overflow){
		
		var popupcontent=document.getElementById("popup_content");
		var popuptext=document.getElementById("popup_text");	
		var popuptitle=document.getElementById("popup_title");	
		var popup=document.getElementById('popup');
		var screenwidth=screen.width;
		var screenheight=getScreenHeight();	
		if(overflow==1)
		popuptext.style.overflowY="scroll";
		if(overflow==0)
		popuptext.style.overflowY="hidden";		
		var titleheight=popuptitle.style.height.replace("px","");
		popuptext.style.height=height-titleheight+'px';
		popupcontent.style.width=width+'px';
		popupcontent.style.height=height+'px';	
		var posx=(screenwidth-width)/2+"px";
		var posy=(screenheight-height)/2;
		if(posy<0)posy=0;
			posy+="px";		
		popupcontent.style.left=posx;
		popupcontent.style.top=posy;		

		popup.style.top=document.body.scrollTop*1;	
		popup.style.display='inline';
	
		
		popuptext.innerHTML=value;
		popuptitle.innerHTML=title;

		
	}
function hidePopup(){
	var popupcontent=document.getElementById("popup_content");
	var popuptext=document.getElementById("popup_text");	
	var popuptitle=document.getElementById("popup_title");	
	var popup=document.getElementById('popup');

	popuptext.innerHTML="";
	popuptitle.innerHTML="";	
	popup.style.display='none';
}