um.s4=(um.s&&um.u.indexOf('version/4')!=-1);

um.createElement=function(n,a)
{
	um.el=(um.cns)?um.m.createElementNS('http://www.w3.org/1999/xhtml',n):um.m.createElement(n);

	if(typeof a!=um.un)
	{
		for(var i in a)
		{
			switch(i)
			{
				case 'text' :
					um.el.appendChild(um.m.createTextNode(a[i]));
					break;
				case 'class' :
					um.el.className=a[i];
					break;
				case 'src' :
					if(!um.s4)
						um.el.setAttribute(i,''); /* THIS IS THE LINE THAT BREAKS SAFARI 4*/
					um.el[i]=a[i];
					break;
				default :
				 	um.el.setAttribute(i,''); 
				 	um.el[i]=a[i];
					break;
			}
		}
	}
	return um.el;
};