function removeDuplicates(hasDup){
	
	var noDup = new hasDup.constructor;
	
	if(noDup.push){
		noDup[0] = hasDup[0];
	
		for(i=1;i<hasDup.length;i++){
			for(j=0;j<noDup.length;j++)
				if(hasDup[i] == noDup[j])
					break;
			if(j<noDup.length) continue;
			
			noDup.push(hasDup[i]);
		}
	}
	else{
		noDup = hasDup.charAt(0);
			
		for(i=1;i<hasDup.length;i++){
			for(j=0;j<noDup.length;j++)
				if(hasDup.charAt(i) == noDup.charAt(j))
					break;
			if(j<noDup.length) continue;
	
			noDup = noDup.concat(hasDup.charAt(i));
		}
	}
	
	return noDup;
}

/* TEST this function*/
var dArr = new Array("1", "1", "3", "2", "2");
var dString = "@abfbreeiurfj@@@@@@@@@@gewriortw 8t5423p45z4 5452 4572ß tadfljvaDF-laäfa#rg #reatmdd....de";

alert(removeDuplicates(dString));
alert(removeDuplicates(dArr));

/*TEST END */