function externalLinks(){ 
	if(!document.getElementsByTagName){return;}
	var aa=document.getElementsByTagName('a'),l=aa.length,a; 
	while(l){a=aa[--l];if(a.getAttribute('href')&&a.getAttribute('rel')&&(a.getAttribute('rel')=='external')){a.setAttribute('target','_blank');}	}
	var fa=document.getElementsByTagName('form'),f;l=fa.length;
	while(l){f=fa[--l];if(f.getAttribute('rel')&&(f.getAttribute('rel')=='external')){f.setAttribute('target','_blank');}	}
} 

function initAll(){
	externalLinks();
}

if(window.addEventListener){window.addEventListener('load',initAll,false);}
else if(window.attachEvent){window.attachEvent('onload',initAll);}
else{
	if(typeof window.onload=='function'){window.__onload=window.onload;}
	window.onload=function(){
		if(window.__onload){window.__onload();}
		initAll();
	}
}