/* Funkce pro zjistovani velikosti, pozice predavaneho objektu */
function getElementLeft(Elem) {
  if(Elem!=null) {
		var elem;
 		if(document.getElementById) {
 			var elem = document.getElementById(Elem);
 		} else if (document.all){
 			var elem = document.all[Elem];
 		}
 		xPos = elem.offsetLeft;
 		tempEl = elem.offsetParent;
   		while (tempEl != null) {
   			xPos += tempEl.offsetLeft;
 	  		tempEl = tempEl.offsetParent;
   		}
 		return xPos;
 	}
}

function getelm(elm) {
	if(document.getElementById) {
		var ret = document.getElementById(elm);
	} else if (document.all){
		var ret = document.all[elm];
	}
	return ret;
}

function set_banners() {
  x=getElementLeft('hlavni');
	banl=getelm('ban-left');
  if(banl!=null) {
    banl.style.left=(x-30)+'px';
    banl.style.display='block';
  }
	banr=getelm('ban-right');
	if(banr!=null) {
    banr.style.left=(x+960)+'px';
    banr.style.display='block';
  }
}

function show_banner(jaky) {
	ban=getelm('ban-'+jaky);
	if(ban!=null) {
    if(ban.style.width!='120px') {
      if(jaky=='left') {
        x=getElementLeft('hlavni');
        ban.style.left=(x-120)+'px';
      }
      ban.style.width='120px';
      ban.style.display='block';
    	obs=getelm('ban-'+jaky+'-obsah');
    	obs.style.display='block';
    	lnk=getelm('ban-'+jaky+'-a');
    	lnk.style.display='none';
    } else {
      if(jaky=='left') {
        x=getElementLeft('hlavni');
        ban.style.left=(x-30)+'px';
      }
      ban.style.width='30px';
      ban.style.display='block';
    	obs=getelm('ban-'+jaky+'-obsah');
    	obs.style.display='none';
    	lnk=getelm('ban-'+jaky+'-a');
    	lnk.style.display='block';
    }
  }
}

function news_detail(cis) {
  a=0; while(a<10) {
    a=a+1;
    div=document.getElementById("news-"+a);
    if(div!=null) {
      div.style.display="none";
    }
  }
  div_show=document.getElementById("news-"+cis);
  if(div_show!=null) {
    div_show.style.display="block";
  }
}

function cont_detail(cis) {
  a=0; while(a<20) {
    a=a+1;
    div=document.getElementById("content-"+a);
    if(div!=null) {
      div.style.display="none";
    }
  }
  div_show=document.getElementById("content-"+cis);
  if(div_show!=null) {
    div_show.style.display="block";
  }
}