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 popup(windowname){toggle('blanket');toggle(windowname);position_popup(windowname);}
function position_popup(elid){var popup=document.getElementById(elid);var arrayPageSize=getPageSize();var arrayPageScroll=getPageScroll();if(popup.style.position=='fixed'){var popupTop=((arrayPageSize[3]-35-popup.clientHeight)/2);}else{var popupTop=arrayPageScroll[1]+((arrayPageSize[3]-35-popup.clientHeight)/2);}
var popupLeft=((arrayPageSize[0]-20-popup.clientWidth)/2);popup.style.top=(popupTop<0)?"0px":popupTop+"px";popup.style.left=(popupLeft<0)?"0px":popupLeft+"px";}
function getPageScroll(){var yScroll;if(self.pageYOffset){yScroll=self.pageYOffset;}else if(document.documentElement&&document.documentElement.scrollTop){yScroll=document.documentElement.scrollTop;}else if(document.body){yScroll=document.body.scrollTop;}
arrayPageScroll=['',yScroll];return arrayPageScroll;}
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=[pageWidth,pageHeight,windowWidth,windowHeight];return arrayPageSize;}