function str_replace ( search, replace, subject ) {	// Replace all occurrences of the search string with the replacement string
	// 
	// +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
	// +   improved by: Gabriel Paderni

	if(!(replace instanceof Array)){
		replace=new Array(replace);
		if(search instanceof Array){//If search	is an array and replace	is a string, then this replacement string is used for every value of search
			while(search.length>replace.length){
				replace[replace.length]=replace[0];
			}
		}
	}

	if(!(search instanceof Array))search=new Array(search);
	while(search.length>replace.length){//If replace	has fewer values than search , then an empty string is used for the rest of replacement values
		replace[replace.length]='';
	}

	if(subject instanceof Array){//If subject is an array, then the search and replace is performed with every entry of subject , and the return value is an array as well.
		for(k in subject){
			subject[k]=str_replace(search,replace,subject[k]);
		}
		return subject;
	}

	for(var k=0; k<search.length; k++){
		var i = subject.indexOf(search[k]);
		while(i>-1){
			subject = subject.replace(search[k], replace[k]);
			i = subject.indexOf(search[k],i);
		}
	}

	return subject;

}