var vacance = new Array();
 var show = new Array();

function init()
{
 var tags = document.getElementsByTagName('div');

 for(var i=0;i<tags.length;i++)
 {
 	if (tags[i].className == 'requirement')
 	{
 		vacance.push(tags[i]);
 		show.push(0);
 	}
 }
}

 function ShowHide(id)
 {
 	var i=0;
	for(i=0;i<vacance.length;i++)
 	{
       if (vacance[i].id == "vacance_"+id)
       {
       	  break;
       }
 	}
 	if (show[i] == 0)
 	{
 		for (var j=0;j<vacance.length;j++)
 		{
 			vacance[j].className = "requirement";
 			show[j] = 0;
 		}
 		vacance[i].className = "requirement_details";
 	}
 	else
 	{
 		vacance[i].className = "requirement";
 	}
 	show[i] = (show[i] + 1) % 2;
 }

 window.onload= init;